When this artifact enters, each player chooses a nonland permanent and puts a doom counter on it.
, , Sacrifice this artifact: Destroy each permanent with a doom counter on it.

Flash
When this artifact enters, target creature you control gets +2/+2 until end of turn.
, , Sacrifice this artifact: Draw a card.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Haste
When this creature enters, tap all other creatures.

This land enters tapped unless a player has 13 or less life.
: Add or .

Return target green card from your graveyard to your hand.

Haste
As long as this card is in your graveyard and you control a Mountain, creatures you control have haste.

Enchant creature
When this Aura enters, target creature can't block this turn.
Enchanted creature gets +1/+1 and has haste.

When this enchantment enters, create a Wicked Role token attached to target creature you control. (Enchanted creature gets +1/+1. When this token is put into a graveyard, each opponent loses 1 life.)
At the beginning of your draw step, if you control an enchanted creature, you lose 1 life and you draw an additional card.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Return target creature card from your graveyard to your hand.

When this creature enters, creatures you control get +1/+1 until end of turn.

Enchant permanent
Enchanted permanent has hexproof.
When enchanted permanent leaves the battlefield, if it was historic, draw two cards. (Artifacts, legendaries, and Sagas are historic.)

Haste
: Another target creature gains haste until end of turn.

This land enters tapped.
: Add or .

When this creature enters, put a +1/+1 counter on target creature you control.
Whenever this creature attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever this creature deals combat damage to a player, draw a card.

, , Pay 1 life, Discard a card: Draw a card, mill a card, then put a ritual counter on this artifact. Then if it has three or more ritual counters on it, remove them and transform it. Activate only as a sorcery.

(: Add .)

Flying
At the beginning of your end step, sacrifice a non-Demon creature. If you do, create a token that's a copy of this creature.