Warrior's Oath [Portal Three Kingdoms] Phyrexian Dragon Skeleton If one or more counters

If one or more counters would be put on a permanent your team controls

Activated abilities of creatures your opponents control can't be activated

When Gaea's Blessing is put into your graveyard from your library

Set: Scars of Mirrodin Type: Artifact Creature — Phyrexian Wurm Rarity: Mythic Cost: {6} Deathtouch

Clockwork Avian enters the battlefield with four +1/+0 counters on it

Warrior's Oath [Portal Three Kingdoms] Phyrexian Dragon Skeleton If one or more countersSet: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {R}{R} Take an extra turn after this one. At the beginning of that turn's end step, you lose the game. "If I fail, my head is yours." Warrior's oath common during the Three Kingdoms period