Be a Magma Cube Part 3 In One Command For 1.16+

summon falling_block ~ ~.5 ~ {Motion:[.0,.5,.0],BlockState:{Name:activator_rail},Time:1,Passengers:[{id:falling_block,BlockState:{Name:redstone_block},Time:1},{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"data merge block ~12 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=MagmaEssenceItem] at @s as @e[distance=..1,type=item,nbt={Item:{id:\\\"minecraft:diamond_leggings\\\",Count:1b}}] run data merge entity @s {Item:{tag:{FireThorns:5,display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Leggings\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"red\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\",Lore:[\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Fire Thorns V\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"green\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"]},HideFlags:2,Unbreakable:1b,Enchantments:[{id:\\\"minecraft:protection\\\",lvl:2},{id:\\\"minecraft:fire_protection\\\",lvl:3}]}}}\"}"},{id:command_block_minecart,Command:"data merge block ~11 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=MagmaEssenceItem] at @s if entity @e[distance=..1,type=item,nbt={Item:{id:\\\"minecraft:diamond_chestplate\\\",Count:1b}}] run kill @s\"}"},{id:command_block_minecart,Command:"data merge block ~10 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=MagmaEssenceItem] at @s as @e[distance=..1,type=item,nbt={Item:{id:\\\"minecraft:diamond_chestplate\\\",Count:1b}}] run data merge entity @s {Item:{tag:{FireThorns:5,display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Chestplate\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"red\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\",Lore:[\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Fire Thorns V\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"green\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"]},HideFlags:2,Unbreakable:1b,Enchantments:[{id:\\\"minecraft:protection\\\",lvl:2},{id:\\\"minecraft:fire_protection\\\",lvl:3}]}}}\"}"},{id:command_block_minecart,Command:"data merge block ~9 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=MagmaEssenceItem] at @s if entity @e[distance=..1,type=item,nbt={Item:{id:\\\"minecraft:diamond_helmet\\\",Count:1b}}] run kill @s\"}"},{id:command_block_minecart,Command:"data merge block ~8 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=MagmaEssenceItem] at @s as @e[distance=..1,type=item,nbt={Item:{id:\\\"minecraft:diamond_helmet\\\",Count:1b}}] run data merge entity @s {Item:{tag:{FireThorns:5,display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Helmet\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"red\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\",Lore:[\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Fire Thorns V\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"green\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"]},HideFlags:2,Unbreakable:1b,Enchantments:[{id:\\\"minecraft:protection\\\",lvl:2},{id:\\\"minecraft:fire_protection\\\",lvl:3}]}}}\"}"},{id:command_block_minecart,Command:"data merge block ~7 ~-2 ~-1 {auto:1,Command:\"execute as @e[type=item,nbt={Item:{id:\\\"minecraft:player_head\\\",Count:1b,tag:{SkullOwner:{Id:[I;705457838,450446965,-1108934656,4966496],Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOWMyZTlkODM5NWNhY2Q5OTIyODY5YzE1MzczY2Y3Y2IxNmRhMGE1Y2U1ZjNjNjMyYjE5Y2ViMzkyOWM5YTExIn19fQ==\\\"}]}}}}}] at @s align xyz positioned ~0.5 ~ ~0.5 if block ~ ~1 ~ minecraft:piston[facing=down,extended=true] if block ~ ~-1 ~ minecraft:glass if block ~1 ~-1 ~ minecraft:red_nether_bricks if block ~-1 ~-1 ~ minecraft:red_nether_bricks if block ~ ~-1 ~1 minecraft:red_nether_bricks if block ~ ~-1 ~-1 minecraft:red_nether_bricks if block ~1 ~-1 ~1 minecraft:nether_brick_slab if block ~1 ~-1 ~-1 minecraft:nether_brick_slab if block ~-1 ~-1 ~1 minecraft:nether_brick_slab if block ~-1 ~-1 ~-1 minecraft:nether_brick_slab run tag @s add MagmaEssenceItem\"}"},{id:command_block_minecart,Command:"data merge block ~6 ~-2 ~-1 {auto:1,Command:\"execute as @e[type=item,nbt={Item:{id:\\\"minecraft:player_head\\\",Count:1b,tag:{SkullOwner:{Id:\\\"2a0c6eae-1ad9-4675-bde7-0000004bc860\\\",Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOWMyZTlkODM5NWNhY2Q5OTIyODY5YzE1MzczY2Y3Y2IxNmRhMGE1Y2U1ZjNjNjMyYjE5Y2ViMzkyOWM5YTExIn19fQ==\\\"}]}}}}}] run data merge entity @s {Item:{id:\\\"minecraft:player_head\\\",Count:1b,tag:{display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Essence\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"white\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"},SkullOwner:{Id:[I;705457838,450446965,-1108934656,4966496],Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOWMyZTlkODM5NWNhY2Q5OTIyODY5YzE1MzczY2Y3Y2IxNmRhMGE1Y2U1ZjNjNjMyYjE5Y2ViMzkyOWM5YTExIn19fQ==\\\"}]}}}}}\"}"},{id:command_block_minecart,Command:"data merge block ~5 ~-2 ~-1 {auto:1,Command:\"execute as @e[tag=CrushedCream] unless entity @s[nbt={ArmorItems:[{},{},{},{id:\\\"minecraft:player_head\\\",Count:1b,tag:{display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Essence\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"white\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"},SkullOwner:{Id:[I;705457838,450446965,-1108934656,4966496],Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOWMyZTlkODM5NWNhY2Q5OTIyODY5YzE1MzczY2Y3Y2IxNmRhMGE1Y2U1ZjNjNjMyYjE5Y2ViMzkyOWM5YTExIn19fQ==\\\"}]}}}}]}] run kill @s\"}"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~-1 {auto:1,Command:\"execute as @e[type=item,nbt={Item:{id:\\\"minecraft:magma_cream\\\",Count:64b}}] at @s if block ~ ~1 ~ minecraft:piston[facing=down,extended=true] if block ~ ~-1 ~ minecraft:glass if block ~1 ~-1 ~ minecraft:red_nether_bricks if block ~-1 ~-1 ~ minecraft:red_nether_bricks if block ~ ~-1 ~1 minecraft:red_nether_bricks if block ~ ~-1 ~-1 minecraft:red_nether_bricks if block ~1 ~-1 ~1 minecraft:nether_brick_slab if block ~1 ~-1 ~-1 minecraft:nether_brick_slab if block ~-1 ~-1 ~1 minecraft:nether_brick_slab if block ~-1 ~-1 ~-1 minecraft:nether_brick_slab run kill @s\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~-1 {auto:1,Command:\"execute as @e[type=item,nbt={Item:{id:\\\"minecraft:magma_cream\\\",Count:64b}}] at @s align xyz positioned ~0.5 ~ ~0.5 if block ~ ~1 ~ minecraft:piston[facing=down,extended=true] if block ~ ~-1 ~ minecraft:glass if block ~1 ~-1 ~ minecraft:red_nether_bricks if block ~-1 ~-1 ~ minecraft:red_nether_bricks if block ~ ~-1 ~1 minecraft:red_nether_bricks if block ~ ~-1 ~-1 minecraft:red_nether_bricks if block ~1 ~-1 ~1 minecraft:nether_brick_slab if block ~1 ~-1 ~-1 minecraft:nether_brick_slab if block ~-1 ~-1 ~1 minecraft:nether_brick_slab if block ~-1 ~-1 ~-1 minecraft:nether_brick_slab run summon armor_stand ~ ~-0.4 ~ {NoGravity:1b,Small:1b,Invisible:1b,Tags:[\\\"CrushedCream\\\"],ArmorItems:[{},{},{},{id:\\\"minecraft:player_head\\\",Count:1b,tag:{display:{Name:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"Magma Essence\\\\\\\",\\\\\\\"color\\\\\\\":\\\\\\\"white\\\\\\\",\\\\\\\"italic\\\\\\\":\\\\\\\"false\\\\\\\"}\\\"},SkullOwner:{Id:[I;705457838,450446965,-1108934656,4966496],Properties:{textures:[{Value:\\\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOWMyZTlkODM5NWNhY2Q5OTIyODY5YzE1MzczY2Y3Y2IxNmRhMGE1Y2U1ZjNjNjMyYjE5Y2ViMzkyOWM5YTExIn19fQ==\\\"}]}}}}]}\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-2 ~-1 ~ ~ ~ air\"}"},{id:command_block_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:command_block_minecart,Command:"kill @e[type=command_block_minecart,distance=..1]"}]}