edhseer Commander synergy, explained
Legendary Creature — Human Berserker
Mana cost: {2}{R}
Haste
You may have Arni's base power become 1 plus the greatest power among other creatures you control until end of turn.
Causes: nothing.
Cares about: nothing.
a Human enters the battlefield — 661 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow enters:
a creature attacks — 3,451 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow attacks:
58 other cards care about it too. These are the ones with the most connections.
a creature blocks — 3,451 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow blocks:
1 other card cares about it too. These are the ones with the most connections.
anything attacks — 3,451 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow attacks:
19 other cards care about it too. These are the ones with the most connections.
a creature is cast — 3,468 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow is cast:
10 other cards care about it too. These are the ones with the most connections.
a nontoken creature enters the battlefield — 3,511 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow enters:
a creature enters the battlefield — 3,801 cards in Arni Brokenbrow's colors can cause this (Arni Brokenbrow is one).
When Arni Brokenbrow enters:
58 other cards care about it too. These are the ones with the most connections.