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

{2}: Prevent the next 1 damage that would be dealt to target creature this turn. Any player may activate this ability.

Scoria Cat gets +3/+3 as long as you control no untapped lands.

Reorder your graveyard at random. An opponent chooses a card at random in your graveyard. If it’s a creature card, put it onto the battlefield. Otherwise, exile it.

Searing Wind deals 10 damage to any target.

Basic lands each player controls have shroud as long as that player controls three or fewer lands. (They can’t be the targets of spells or abilities.)

{2}{W}: The next time target attacking creature would deal combat damage to Shield Dancer this turn, that creature deals that damage to itself instead.

Whenever Shrouded Serpent attacks, defending player may pay {4}. If that player doesn’t, Shrouded Serpent can’t be blocked this turn.

When Silt Crawler enters the battlefield, tap all lands you control.

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.

Whenever Soul Charmer deals combat damage to a creature, you gain 2 life unless that creature’s controller pays {2}.

Return two target creature cards from your graveyard to your hand unless any player pays {X}.

Flying

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

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Sacrifice Spiketail Hatchling: Counter target spell unless its controller pays {1}.

Reach (This creature can block creatures with flying.)

Sacrifice a land: Spitting Spider deals 1 damage to each creature with flying.

Sacrifice Spore Frog: Prevent all combat damage that would be dealt this turn.

Spur Grappler gets +2/+1 as long as you control no untapped lands.

{1}{G}, Sacrifice a land: Create two 1/1 green Squirrel creature tokens.

{1}{G}, Sacrifice a land: Squirrel creatures get +1/+1 until end of turn.

Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn.

Flying

Sacrifice a land: Return Stormwatch Eagle to its owner’s hand.