msem-instigator

As an additional cost to cast this spell, pay {2} or sacrifice a creature.
Menace

Menace (This creature can't be blocked except by two or more creatures.)
Cycling {R} ({R}, Discard this card: Draw a card.)

Trample
Risti Assault Squadron can't attack unless all other creatures you control also attack. (It can attack if it's the only creature you control.)

Other creatures you control get +3/+0.
When Zare enters, create a 2/1 white Bird creature token with flying and a 3/3 green Horse creature token.
Whenever another creature you control attacks or blocks, sacrifice it at end of combat.

Trample

Indestructible
Whenever Cyrukan attacks, choose one —
• Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
• Create a Weapon token and attach it to target creature you control. (It's an Equipment artifact with equip {2} and “Equipped creature gets +1/+1.”)
At the beginning of each end step, if you control three or more tokens, transform Cyrukan.

Lands you control are colorless lands named Wastes with “{T}: Add {C}” and lose all other card types and abilities.

Flying
Whenever a creature attacks you or a planeswalker you control, put a -1/-1 counter on that creature.

Return up to two target creature cards from your graveyard to your hand.
Coalesce {7}{B} (You may cast this from your graveyard for {7}{B}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
At the beginning of each player's upkeep, they sacrifice a nonenchantment creature. Then if there are no nonenchantment creatures on the battlefield, sacrifice Kantra of Plagues.

You may sacrifice three artifacts rather than pay this spell's mana cost.
Exile three artifact cards from your graveyard: Return Salvage Titan from your graveyard to your hand.

At the beginning of your upkeep, discard a card and create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

When 11-A Lionheart enters, it deals 2 damage to each nonartifact creature.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Haste
Cycling {2} ({2}, Discard this card: Draw a card.)

Indestructible
As long as your devotion to red is less than five, Purphoros isn't a creature.
Whenever you attack, Purphoros deals 1 damage to any target.
{3}{R}: Discard up to two cards, then draw that many cards.

Flying, haste
Whenever Shimmering Dragon attacks, for each creature you control, create a tapped and attacking token that's a copy of that creature. Exile the tokens at the beginning of the end step.

Trample

You may have Reaping Willow assign its combat damage as though it weren't blocked.
{2}{G}: Reaping Willow gains indestructible until end of turn.

You gain 7 life.
Coalesce {5}{G}{G} (You may cast this from your graveyard for {5}{G}{G}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Reach
Whenever Thicketwalker attacks, you may tap or untap target land.

You may exert Wiedfree Berserker as it attacks. When you do, target creature can't block this turn. (An exerted creature won't untap during your next untap step.)
If exerting a creature you control causes a triggered ability of a permanent you control to trigger, that ability triggers another time.