edhseer Commander synergy, explained
Legendary Creature — Human Warrior
Mana cost: {2}{G}
Trample
Whenever you cast a historic spell, Jamie McCrimmon gets +X/+X until end of turn, where X is that spell's mana value.
triggered — gives +X/+X, where X is that spell's mana value
Doctor's companion
Causes: nothing.
Cares about: a spell is cast.
a Warrior creature enters the battlefield — 308 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
a Warrior enters the battlefield — 310 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
a Human enters the battlefield — 453 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon enters:
a creature attacks — 3,620 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon attacks:
40 other cards care about it too. These are the ones with the most connections.
anything attacks — 3,620 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon attacks:
6 other cards care about it too. These are the ones with the most connections.
a creature blocks — 3,620 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon blocks:
1 other card cares about it too. These are the ones with the most connections.
a creature is cast — 3,640 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon is cast:
29 other cards care about it too. These are the ones with the most connections.
a nontoken creature enters the battlefield — 3,710 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon enters:
2 other cards care about it too. These are the ones with the most connections.
a creature enters the battlefield — 4,064 cards in Jamie McCrimmon's colors can cause this (Jamie McCrimmon is one).
When Jamie McCrimmon enters:
73 other cards care about it too. These are the ones with the most connections.