Prophecy

Defender (This creature can't attack.) {3}: Destroy Wall of Vipers and target creature it's blocking. Any player may activate this ability.

{W}{W}: Target attacking creature gets -1/-0 until end of turn.

You may discard a Forest card rather than pay this spell's mana cost. Prevent all combat damage that would be dealt by unblocked creatures this turn.

Activated abilities of nontoken Rebels cost an additional "Sacrifice a land" to activate.

Flying, first strike At the beginning of your upkeep, sacrifice Pit Raptor unless you pay {2}{B}{B}.

You may discard a Swamp card rather than pay this spell's mana cost. Choose a creature type. All creatures of that type get -1/-1 until end of turn.

{B}: Regenerate Chilling Apparition. Whenever Chilling Apparition deals combat damage to a player, that player discards a card.

Flying Sacrifice Spiketail Drake: Counter target spell unless its controller pays {3}.

Draw three cards. Then if any player pays {2}, discard three cards.

Defender (This creature can't attack.) {4}: Return Quicksilver Wall to its owner's hand. Any player may activate this ability.

{W}{W}: Target attacking creature gets -1/-0 until end of turn.

Whenever one or more creatures attack you, if Reveille Squad is untapped, you may untap all creatures you control.

At the beginning of your end step, if you control no untapped lands, you gain 2 life.

Hollow Warrior can't attack or block unless you tap an untapped creature you control not declared as an attacking or blocking creature this combat....

Wing Storm deals damage to each player equal to twice the number of creatures with flying that player controls.

Vintara Snapper has shroud as long as you control no untapped lands. (It can't be the target of spells or abilities.)

Enchant land Enchanted land has "{T}: Target creature gets +1/+1 until end of turn."

You may discard a Forest card rather than pay this spell's mana cost. Prevent all combat damage that would be dealt by unblocked creatures this turn.

Mercenaries don't untap during their controllers' untap steps.

Enchant land Enchanted land is a 5/6 green Treefolk creature that's still a land.

At the beginning of your upkeep, sacrifice Darba unless you pay {G}{G}.

{R}: Target creature gains haste until end of turn. (It can attack this turn.)

You may discard a Plains card rather than pay this spell's mana cost. Destroy target artifact or enchantment.

Lands target player controls don't untap during their next untap step.