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Gargos, Vicious Watcher

First printed in Core Set 2020 (2019)

All 5 prints

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  • Secret Lair Drop (SLD) #1329, 2023
  • Core Set 2020 Promos (PM20) #172, 2020
  • Core Set 2020 (M20) #172, 2019
  • Core Set 2020 Promos (PM20) #172p, 2019
  • Core Set 2020 Promos (PM20) #172s, 2019

Gargos, Vicious Watcher

Legendary Creature — Hydra

Vigilance
Hydra spells you cast cost 4 generic less to cast.
Whenever a creature you control becomes the target of a spell, Gargos fights up to one target creature you don't control.

8/7

Illustrated by
Mathias Kollros

Legality

Legal in
Pioneer, Modern, Legacy, Vintage, Historic, Timeless, Penny Dreadful, Gladiator, Commander, Duel Commander, Oathbreaker, Brawl, Competitive Brawl
Not legal in
Standard, Pauper, Future Standard, Alchemy, Premodern, Old School 93/94, Pauper Commander, PreDH, Tiny Leaders, Standard Brawl

Rulings (8)
  • Gargos's cost-reduction ability affects only generic mana in a Hydra's cost. For example, if you cast a Hydra spell with mana cost 2 genericGreenGreenGreen, it will cost GreenGreenGreen to cast, not Green.
  • If the target creature is an illegal target when Gargos's last ability tries to resolve, the ability doesn't resolve. If Gargos is no longer on the battlefield, the target creature won't deal or be dealt damage.
  • To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Gargos). The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
  • If a spell has X in its mana cost, you choose the value for X before applying cost reductions. For example, if you cast a Hydra spell with mana cost XGreenGreen and choose for X to be 6, you pay 2 genericGreenGreen. Any of that Hydra's abilities that refer to X still uses 6 as the value for X regardless of what you actually paid.
  • Gargos's triggered ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
  • Gargos's controller chooses which creature (if any) Gargos will fight, not the controller of the spell.
  • Gargos's cost-reduction ability applies only while it's on the battlefield. Gargos doesn't reduce its own cost.
  • If a spell targets one creature you control multiple times, Gargos's ability triggers once. If that spell targets multiple creatures you control, Gargos's ability triggers once for each of those creatures.

Prices

MTGO price: 0.006 TIX, the cheapest non-foil print (average sell price on GoatBots, 30 Oct 2026).