Spirit Guardians

Spirit Guardian Kay'est
Level 4/WATER/Sea Serpent/Effect
1000ATK/2300DEF
"Guardian" cards cannot be destroyed by your opponent's Spell effects during their turn. If you control an Equip Spell: You can Special Summon this card from your hand, and if you do: You can add 1 "Guardian" Spell/Trap or 1 Equip Spell from your Deck to your hand. You can only use the effect of "Spirit Guardian Kay'est" once per turn.

Spirit Guardian Grarl
Level 5/EARTH/Dinosaur/Effect
3000ATK/1000DEF
Your opponent's face-up monsters cannot change their battle positions. If you control an Equip Spell: You can Special Summon this card from your hand, and if you do, you can Special Summon 1 "Guardian" monster from your hand, except "Spirit Guardian - Grarl", ignoring its Summoning Conditions.  You can only use the effect of "Spirit Guardian Grarl" once per turn.

Spirit Guardian Emma
Level 3/WIND/Fairy/Effect
1600ATK/1200DEF
If you control an Equip Spell: You can Special Summon this card from your hand, and if you do, you can add 1 "Guardian" card from your GY to your hand. If a "Guardian" monster(s) would be destroyed by battle or an opponent's card effect: You can return this card from the field to your hand instead. You can only use each effect of "Spirit Guardian Emma" once per turn.

Guardian Eatos, Spirit of Protection
Level 8/WIND/Fairy/Effect
3000ATK/2500DEF
Unaffected by the effects of Equip Spells. You can only use each following effect of "Guardian Eatos, Spirit of Protection" once per turn. If you have no monsters in your GY, other than "Guardian Monsters": You can Special Summon this card from your hand. If this card is equipped with an Equip Spell: You can banish 1 card your opponent controls. If this card attacks an opponent's monster, it gains 500 ATK for each banished card, until the end of the Damage Step.

Backup Guardian
Level 4/DARK/Warrior/Effect
500ATK/2200DEF
If you control no monsters, you can Special Summon this card (from your hand). Once per turn: You can change the target of an Equip Spell you control. If your opponent attacks while the only other monster you control was destroyed during this Battle Phase: You can discard 2 cards, end the Battle Phase. You can only use this effect of "Backup Guardian" once per Duel.

Spirit Sword of Sealing
Equip Spell
(This card is always treated as a "Guardian" card.)
A monster equipped with this card gains 500 ATK, but its effects are negated. If this card's equip target was changed: You can banish the original target. You can only use this effect of "Spirit Sword of Sealing" once per turn.

Guardian Shield of Unity
Equip Spell
(This card is always treated as a "Guardian" card.)
A monster equipped with this card gains 300 DEF. If a "Guardian" monster would be destroyed by battle or card effect: You can destroy this card instead. You can banish 1 "Guardian" monster from your hand: Add this card from your GY to your hand. You can only use this effect of "Guardian Shield of Unity" once per turn.

Treasure of the Spirit
Continuous Spell
(This card is always treated as a "Guardian" card.)
Activate while the only monsters you control are "Guardian" monsters. (min. 1) If you do not control "Spirit Guardian" monsters, destroy this card. While you control this card, draw 2 cards for your Normal Draw. Once per turn: You can banish 1 card from your hand; add 1 Spell from your Deck to your hand.

To Guard You Forever
Continuous Trap
(This card is always treated as a "Guardian" card.)
Once per turn: You can target "Spirit Guardian" monsters in your GY; Special Summon them, then take 500 damage for each monster Summoned this way. You cannot Summon monsters from your Extra Deck, cannot activate the effects of non-"Spirit Guardian" monsters, nor attack with such monsters, the turn you activate and resolve this effect. You can only use the effect of "Guard You Forever" once per turn.