edhseer Commander synergy, explained
Creature — Jellyfish Leech
Not yet released — 13 Nov 2026
Mana cost: {3}{B}
Flying
When this creature enters, exile target creature card with mana value 3 or less from your graveyard. Create a token that's a copy of it. That token gains haste. Sacrifice it at the beginning of the next end step.
triggered — brings a card back
triggered — makes a token
triggered — grants haste
triggered —
Whenever one or more cards leave your graveyard, each opponent loses 1 life and you gain 1 life.
triggered — makes each opponent lose 1 life
triggered — gains you 1 life
triggered — drains each opponent
Causes: exile a creature, a creature leaves a graveyard, create a token, put a token onto the battlefield, a token is put into a graveyard from the battlefield, sacrifice a token, make a player lose life, gain life.
Cares about: anything leaves a graveyard, a creature in a graveyard.
anything leaves the battlefield — 1 card in the game can cause this (Blastoneuron is one).
1 other card cares about it too. These are the ones with the most connections.
a token is sacrificed — 90 cards in the game can cause this (Blastoneuron is one).
When a permanent is sacrificed thanks to Blastoneuron:
a token is put into a graveyard from the battlefield — 122 cards in the game can cause this (Blastoneuron is one).
a token leaves the battlefield — 182 cards in the game can cause this (Blastoneuron is one).
When a permanent leaves the battlefield thanks to Blastoneuron:
4 other cards care about it too. These are the ones with the most connections.
a nontoken creature is exiled — 995 cards in the game can cause this (Blastoneuron is one).
a creature is exiled — 1,003 cards in the game can cause this (Blastoneuron is one).
When a creature is exiled thanks to Blastoneuron:
1 other card cares about it too. These are the ones with the most connections.
a creature leaves a graveyard — 1,302 cards in the game can cause this (Blastoneuron is one).
When a creature leaves a graveyard thanks to Blastoneuron:
3 other cards care about it too. These are the ones with the most connections.
life is gained — 2,076 cards in the game can cause this (Blastoneuron is one).
When Blastoneuron gains life:
84 other cards care about it too. These are the ones with the most connections.
anything is exiled — 2,497 cards in the game can cause this (Blastoneuron is one).
1 other card cares about it too. These are the ones with the most connections.
anything leaves a graveyard — 2,503 cards in the game can cause this.
758 other cards care about it too. These are the ones with the most connections.
put a creature into a graveyard — 2,769 cards in the game can cause this.
2,759 other cards cause it too. These are the ones with the most connections.
life is lost — 3,160 cards in the game can cause this (Blastoneuron is one).
When a permanent makes a player lose life thanks to Blastoneuron:
46 other cards care about it too. These are the ones with the most connections.
anything is sacrificed — 3,450 cards in the game can cause this (Blastoneuron is one).
2 other cards care about it too. These are the ones with the most connections.
a token enters the battlefield — 3,710 cards in the game can cause this (Blastoneuron is one).
12 other cards care about it too. These are the ones with the most connections.
anything attacks — 17,934 cards in the game can cause this (Blastoneuron is one).
127 other cards care about it too. These are the ones with the most connections.
a creature is cast — 18,010 cards in the game can cause this (Blastoneuron is one).
90 other cards care about it too. These are the ones with the most connections.
put a creature onto the battlefield — 19,800 cards in the game can cause this.
When Blastoneuron enters:
19,793 other cards cause it too. These are the ones with the most connections.