Flying, menace
Whenever this creature attacks, each player gets two rad counters.
Whenever one or more nonland cards are milled, you may create that many 2/2 black Zombie Mutant creature tokens. Do this only once each turn.

Flying, lifelink
Pay 7 life: Draw seven cards.

Whenever you attack with one or more Zombies, draw that many cards, then discard that many cards. You gain that much life.
, Exile two cards from your graveyard: Create a tapped 2/2 black Zombie creature token.

As this creature enters, choose a word with four or more letters.
Spells with the chosen word in their text box can't be cast.

Flying
As this creature enters, remove all counters from all permanents. This creature enters with a +1/+1 counter on it for each counter removed this way.

Destroy all creatures. They can't be regenerated.

This creature enters with X +1/+1 counters on it.
At the beginning of your upkeep, double the number of +1/+1 counters on this creature.
This creature has trample as long as it has ten or more +1/+1 counters on it.

(: Add or .)
This land enters tapped unless you control two or more basic lands.

Indestructible
As long as your devotion to red and white is less than seven, Iroas isn't a creature.
Creatures you control have menace.
Prevent all damage that would be dealt to attacking creatures you control.

When Acererak enters, if you haven't completed Tomb of Annihilation, return Acererak to its owner's hand and venture into the dungeon.
Whenever Acererak attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature of their choice.

: Add .
, , Discard a card: Look at the top X cards of your library, where X is the number of artifacts you control. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

Flying
: This creature gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice this creature at the beginning of the next end step.

This spell costs less to cast for each creature on the battlefield.
Destroy all creatures.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Create an 8/8 blue Kraken creature token with hexproof.
II — Tap all nonland permanents target opponent controls. They don't untap during their controller's next untap step.
III — Gain control of target permanent an opponent controls. Untap it.

(: Add or .)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

This spell can't be countered.
Counter target spell you don't control.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Whenever this creature enters or attacks, mill three cards, then return a land card from your graveyard to the battlefield tapped.
Activated abilities of lands you control cost less to activate.
Land creatures you control get +1/+1.

: Add .
: Add . Activate only if you control an Island or a Swamp.

Flying
When Malfegor enters, discard your hand. Each opponent sacrifices a creature of their choice for each card discarded this way.

Whenever a creature you control enters, it deals damage equal to its power to any target.