edhseer Commander synergy, explained
Instant
Mana cost: {2}{R}{R}
Target creature gains trample until end of turn.
on-cast — grants a keyword
When that creature becomes blocked this turn, it gets +1/+1 until end of turn for each creature blocking it.
triggered — gives +1/+1 for each creature blocking it
Causes: nothing.
Cares about: a creature becomes blocked.
an instant is cast — 3,931 cards in the game can cause this (Barreling Attack is one).
When Barreling Attack is cast:
427 other cards care about it too. These are the ones with the most connections.
anything is cast — 31,128 cards in the game can cause this (Barreling Attack is one).
When Barreling Attack is cast:
5 other cards care about it too. These are the ones with the most connections.