First strike (This creature deals combat damage before creatures without first strike.)

Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Create two 1/1 green Phyrexian Insect creature tokens with infect. (They deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Look at the top five cards of target opponent's library. Put one of those cards into that player's graveyard and the rest on top of their library in any order.

Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

Fallen Askari can't block.

Put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. Exile it at the beginning of the next end step. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

Whenever an opponent casts a creature spell, that player loses 2 life unless they pay .

When Mercenary Knight enters the battlefield, sacrifice it unless you discard a creature card.

First strike

When Nekrataal enters the battlefield, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

Sacrifice an artifact: Regenerate Rusted Slasher.

As Shapeshifter enters the battlefield, choose a number between 0 and 7.

At the beginning of your upkeep, you may choose a number between 0 and 7.

Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of your draw step, destroy each creature with mana value equal to the number of age counters on Wave of Terror. They can't be regenerated.