edhseer Commander synergy, explained
Land
Add {C}.
activated {T} — adds 1 mana
This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
activated {2} — turns something into a creature
Target attacking Assembly-Worker gets +2/+2 until end of turn.
activated {1}, {T} — gives +2/+2
Causes: nothing.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Mishra's Foundry is one).
When Mishra's Foundry enters:
199 other cards care about it too. These are the ones with the most connections.