edhseer Commander synergy, explained
Legendary Creature — Hydra
Mana cost: {3}{G}{G}{G}
Vigilance
Hydra spells you cast cost {4} less to cast.
static — costs 4 less
Whenever a creature you control becomes the target of a spell, Gargos fights up to one target creature you don't control.
triggered —
Causes: a creature deals noncombat damage.
Cares about: a Hydra creature it makes cheaper to cast, a Hydra artifact it makes cheaper to cast, a Hydra enchantment it makes cheaper to cast, a Hydra planeswalker it makes cheaper to cast, a Hydra instant it makes cheaper to cast, a Hydra sorcery it makes cheaper to cast, a Hydra battle it makes cheaper to cast.
hits creature — 616 cards in Gargos's colors can cause this (Gargos is one).
1 other card cares about it too. These are the ones with the most connections.
anything deals noncombat damage — 432 cards in Gargos's colors can cause this (Gargos is one).
a creature attacks — 3,620 cards in Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher attacks:
42 other cards care about it too. These are the ones with the most connections.
anything attacks — 3,620 cards in Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher attacks:
6 other cards care about it too. These are the ones with the most connections.
a creature blocks — 3,620 cards in Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher blocks:
2 other cards care about it too. These are the ones with the most connections.
a creature is cast — 3,640 cards in Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher 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 Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher enters:
2 other cards care about it too. These are the ones with the most connections.
a creature is dealt damage — 3,835 cards in Gargos's colors can cause this (Gargos is one).
a creature enters the battlefield — 4,064 cards in Gargos's colors can cause this (Gargos is one).
When Gargos, Vicious Watcher enters:
89 other cards care about it too. These are the ones with the most connections.