Xantcha [Vanguard Series] Betrayers of Kamigawa Promos Den of the Bugbear becomes

Den of the Bugbear becomes a 3/2 red Goblin creature with "Whenever this creature attacks

Set: Legends Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Exile All Hallow's Eve with two scream counters on it

This is the Trials of the Pharaoh - Match of the Millennium & Twisted Nightmares promotional card

"O Great Captain

Xantcha [Vanguard Series] Betrayers of Kamigawa Promos Den of the Bugbear becomesSet: Vanguard Series Type: Vanguard Rarity: Rare Sacrifice a permanent: Regenerate target creature. A Phyrexian "sleeper agent," Xantcha has developed an inviolate sense of self. This aberration earned her a death sentence, but she was rescued by Urza and joined his crusade. Her Phyrexian credo of "Waste not, want not" has helped Urza more than even he comprehends.