When Duergar Hedge-Mage enters, if you control two or more Mountains, you may destroy target artifact.When Duergar Hedge-Mage enters, if you control two or more Plains, you may destroy target enchantment.
As The Mimeoplasm enters, you may exile two creature cards from graveyards. If you do, it enters as a copy of one of those cards with a number of additional +1/+1 counters on it equal to the power of the other card.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)Destroy all nontoken creatures.
FlyingAs Archangel of Strife enters, each player chooses war or peace.Creatures controlled by players who chose war get +3/+0.Creatures controlled by players who chose peace get +0/+3.
Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.: Regenerate Mortivore. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)
Ghave, Guru of Spores enters with five +1/+1 counters on it., Remove a +1/+1 counter from a creature you control: Create a 1/1 green Saproling creature token., Sacrifice a creature: Put a +1/+1 counter on target creature.
FlyingAt the beginning of your upkeep, you may gain control of target permanent until end of turn. If you do, untap it and it gains haste until end of turn.