Card

Skithiryx, the Blight Dragon

Mana cost {3}{B}{B}

Legendary Creature — Phyrexian Dragon Skeleton 4/4

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {B}: Skithiryx gains haste until end of turn. {B}{B}: Regenerate Skithiryx.

No bracket restriction: playable from bracket 1. Part of 3 known combos. 7 official rulings.

Commander
Legal
Printing
Mythic · SOM · #79
Cheapest printing
€6.97
EDHREC salt
1.15
Color identity
Black
Keywords
Flying, Infect

Scryfall · EDHREC

Bracket

  • B1 Exhibition — allowed: No restriction at this bracket
  • B2 Core — allowed: No restriction at this bracket
  • B3 Upgraded — allowed: No restriction at this bracket
  • B4 Optimized — allowed: No restriction beyond the banned list
  • B5 cEDH — allowed: No restriction beyond the banned list

Why

  • No Game Changer, mass land denial, extra turn, tutor or two-card combo

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

3 known combos.

Combos: Commander Spellbook

Rulings

  • 2025-09-19 · Wizards of the Coast
    If the regeneration shield is used, Skithiryx isn't destroyed, all damage marked on Skithiryx is healed, it becomes tapped, and it's removed from combat (if applicable).
  • 2025-09-19 · Wizards of the Coast
    Activating the regeneration ability creates a replacement effect that acts like a shield, replacing the next time Skithiryx would be destroyed that turn. The shield works against effects that try to destroy Skithiryx or lethal damage that would be dealt to Skithiryx.
  • 2025-09-19 · Wizards of the Coast
    Skithiryx can regenerate even if it isn't in combat, it's already tapped, or it's undamaged.
  • 2025-09-19 · Wizards of the Coast
    Damage that a creature with infect deals doesn't result in damage being marked on a creature or a player losing life. Instead, it results in that many -1/-1 counters being put on that creature or that many poison counters being given to that player. Damage dealt to planeswalkers still results in that planeswalker losing that many loyalty counters. Damage dealt to battles still results in that battle losing that many defense counters.
  • 2025-09-19 · Wizards of the Coast
    A player who has ten or more poison counters loses the game. This is a state-based action.
  • 2025-09-19 · Wizards of the Coast
    Damage from a source with infect is damage in all respects. If the source with infect also has lifelink, damage dealt by that source also causes its controller to gain that much life. Damage from a source with infect can be prevented or redirected. Abilities that trigger on damage being dealt will trigger if a source with infect deals damage, if appropriate.
  • 2025-09-19 · Wizards of the Coast
    The -1/-1 counters remain on the creature indefinitely. They're not removed if the creature regenerates or the turn ends.

Rulings: Scryfall · Wizards of the Coast

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