[Twitter] Waypoint

/summon LavaSlime ~ ~ ~ {ActiveEffects:[{Id:14,Duration:1000000,ShowParticles:0b},{Id:24,Duration:1000000,ShowParticles:0b}],CustomName:"Waypoint16",Invulnerable:1b,NoAI:1b,Silent:1b,Size:16b}

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/execute @e[type=!Player,name=Waypoint16] ~ ~ ~ /title @a[r=10] title {"text":"Objective Reached"}

/entitydata @e[type=!Player,name=Waypoint0] {HealF:0f,Pos:[1:-1000d]}

/entitydata @e[type=!Player,name=Waypoint1] {CustomName:"Waypoint0",Size:0}

/entitydata @e[type=!Player,name=Waypoint2] {CustomName:"Waypoint1",Size:1}

/entitydata @e[type=!Player,name=Waypoint4] {CustomName:"Waypoint2",Size:2}

/entitydata @e[type=!Player,name=Waypoint8] {CustomName:"Waypoint4",Size:4}

/execute @a ~ ~ ~ /entitydata @e[type=!Player,name=Waypoint16,r=10] {CustomName:"Waypoint8",Size:8}