When you cast this spell, copy it for each time you've cast your commander from the command zone this game.
Each opponent sacrifices a creature of their choice. Each opponent who can't loses half their life, rounded up.

Artifact offering (You may cast this spell as though it had flash by sacrificing an artifact and paying the difference in mana costs between this and the sacrificed artifact. Mana cost includes color.)
Flying, double strike
Creatures attacking your opponents have double strike.

You may pay rather than pay this spell's mana cost.
Trample
At the beginning of your upkeep, you may untap target creature and gain control of it until end of turn. That creature gains haste until end of turn.

This spell costs less to cast, where X is the greatest number of artifacts an opponent controls.
Flying, trample, haste
Whenever this creature deals combat damage to a player, you create a Treasure token for each artifact that player controls.

Federation — Exile target instant or sorcery card from your graveyard. Copy that card X times, where X is the number of creature types among non-Borg creatures you control. You may cast the copies without paying their mana costs. Exile Infinite Diversity.

Assist (Another player can pay up to of this spell's cost.)
Flying
When this creature enters, it deals 4 damage to target creature an opponent controls.

When this creature is put into your graveyard from the battlefield, you may return it to your hand.

When this creature enters, it fights up to one target creature you don't control.
Enrage — Whenever this creature is dealt damage, it fights up to one target creature you don't control.

Convoke
Hexproof

Trample
Soulshift 8

You may pay rather than pay this spell's mana cost.
Trample
At the beginning of your upkeep, you may create a 3/3 green Beast creature token.

Put four +1/+1 counters on each creature you control.
Cycling
When you cycle this card, you may put four +1/+1 counters on target creature.

This spell costs less to cast for each permanent card in your graveyard.
Reach
Immune — Prevent all combat damage that would be dealt to Diamond Weapon.

This spell costs less to cast, where X is the greatest power among creatures you control.
Trample
When Mitotic Ultimus dies, conjure two cards named Mitotic Slime onto the battlefield.

This spell costs less to cast, where X is the amount of life you gained this turn.
Trample
At the beginning of your end step, if you gained life this turn, you may cast this creature from your graveyard.

This spell costs less to cast, where X is the greatest power among creatures you control.
: Add . You gain 2 life.
Whenever a nontoken creature you control enters, put a +1/+1 counter on it and draw a card.

Trample
Cycling
When you cycle this card, put a trample counter on target creature you control.

Affinity for artifacts
Flying
Cascade

Undergrowth — This spell costs less to cast for each creature card in your graveyard.
When this creature enters, return target land card from your graveyard to the battlefield.

This spell costs less to cast, where X is the greatest toughness among creatures you control.
Creatures you control can attack as though they didn't have defender.
Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.

Strange new worlds — This spell costs less to cast, where X is the number of differently named lands you control.
Create two 2/2 black Romulan creature tokens. Draw two cards, then discard a card.

Delve
When this creature enters, return target creature card from your graveyard to your hand.

This spell costs less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.

Search your library for a Dragon permanent card, put it onto the battlefield, then shuffle.
Storm

Searing Wind deals 10 damage to any target.

Volley of Boulders deals 6 damage divided as you choose among any number of targets.
Flashback

Convoke
Create three 3/3 green Beast creature tokens.

This spell costs less to cast, where X is the greatest power among creatures you control.
Trample
Other creatures you control have trample.

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

When you cast this spell, you may return target creature card from your graveyard to the battlefield.
Annihilator 2