Simic Keyrune

Reveal the top four cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard.

Choose one or both — • Return target enchantment card from your graveyard to your hand. • Destroy target enchantment.

Flying Whenever this creature deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

Destroy target artifact you don't control. Overload 4R (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

This land enters tapped. When this land enters, return a land you control to its owner's hand. T: Add RW.

When this creature enters, return target enchantment card from your graveyard to your hand.

Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever this creature deals combat damage to a player, you may draw that many cards.