Ancient City - Rainbow Ruins [SGX1 -Enf10] Common

You must have this many "crystal beast" cards in your game & trap card zone to activate and resolve thesis effects: // * 1+: this card cannot be destroyed by card effects. // * 2+: Once per turn, you can half the battle damage you take. // * 3+: When a Spell/Trap Card is activated: You can send 1 "crystal beast" Monster you control to the graveyard; Negate the Activation and Destroy It. // * 4+: Once per turn, Turning Your Main Phase: You can draw 1 card. // * 5+: Once per turn, the time your main phase: you can target 1 "crystal beast" card in your spell & trap card zone; Special Summon That Target.