edhseer Commander synergy, explained
Instant
Mana cost: {U}
Until end of turn, target creature gains that ability
on-cast — grants a keyword
Return target nonland permanent to its owner's hand.
activated {T} — bounce
Causes: an artifact leaves the battlefield, a battle leaves the battlefield, a creature leaves the battlefield, an enchantment leaves the battlefield, a planeswalker leaves the battlefield.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Retraction Helix is one).
When Retraction Helix is cast:
427 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Retraction Helix is one).
3 other cards care about it too. These are the ones with the most connections.
a creature leaves the battlefield — 4,238 cards in the game can cause this (Retraction Helix is one).
When a creature leaves the battlefield thanks to Retraction Helix:
25 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 (Retraction Helix is one).
When Retraction Helix is cast:
5 other cards care about it too. These are the ones with the most connections.