Reach Undergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
Prototype {2}{U}{U} — 3/3 You may have Hulking Metamorph enter as a copy of an artifact or creature you control, except it's an artifact creature in addition to its other types, and its power and toughness are equal to Hulking Metamorph's power and toughness.
At the beginning of your upkeep, sacrifice two Swamps. If you can't, tap Infernal Denizen, and an opponent may gain control of a creature you control of their choice for as long as Infernal Denizen remains on the battlefield. {T}: Gain control of target creature for as long as Infernal Denizen remains on the battlefield.
Flying, first strike {1}{B}, Reveal Infernal Spawn of Evil from your hand, Say "It's coming!": Infernal Spawn of Evil deals 1 damage to target opponent or planeswalker. Activate only during your upkeep and only once each turn.
"There was a wall here. Now it is dust. A tower rose here. Now it is fallen. An army fought here. Now it is dead. A spirit was here. It is all that remains." —Snow-Fur, kitsune poet
Indestructible As long as your devotion to green and white is less than seven, Karametra isn't a creature. Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle.
Flying, haste When Karrthus, Tyrant of Jund enters, gain control of all Dragons, then untap all Dragons. Other Dragon creatures you control have haste.