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

When there are no creatures on the battlefield, sacrifice Task Mage Assembly.
: Task Mage Assembly deals 1 damage to target creature. Any player may activate this ability but only any time they could cast a sorcery.

Whenever Thresher Beast becomes blocked, defending player sacrifices a land.

Put a +1/+1 counter on each of X target creatures.

Sacrifice a land: Trenching Steed gets +0/+3 until end of turn.

Sacrifice a land: Prevent the next 2 damage that would be dealt to any target this turn.

Flying
At the beginning of your end step, tap all lands you control.

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

Veteran Brawlers can't attack if defending player controls an untapped land.
Veteran Brawlers can't block if you control an untapped land.

Trample
: Vintara Elephant loses trample until end of turn. Any player may activate this ability.

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

Creatures you control get +7/+7 until end of turn.

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

At the beginning of your end step, if you control no untapped lands, draw a card.

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

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

At the beginning of your upkeep, sacrifice Whipstitched Zombie unless you pay .

Target creature gets +1/+1 until end of turn. That creature gets an additional +4/+4 until end of turn unless any player pays .

Flying
When Windscouter attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

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