Ancient City - Rainbow Ruins (DP07-EN017) [Duelist Pack 7: Jesse Anderson]

This card gets these effects, based on the number of "Crystal Beast" cards in your Spell & Trap Card Zone.
<br>•1+: This card cannot be destroyed by a card effect.
<br>•2+: Once per turn, you can halve the Battle Damage you take.
<br>•3+: You can send 1 "Crystal Beast" monster you control to the Graveyard to negate the activation of a Spell or Trap Card and destroy it.
<br>•4+: Once per turn, during your Main Phase, you can draw 1 card.
<br>•5+: Once per turn, during your Main Phase, you can Special Summon 1 "Crystal Beast" card from your Spell & Trap Card Zone.