Amulet of Vigor (Borderless) [The Lost Caverns of Ixalan Commander] Monkey Cleric pay life equal to its

pay life equal to its mana value rather than pay its mana cost

Whenever Kroxa enters the battlefield or attacks

This kit builds one Dark Apostle and two Dark Disciples

it deals that much damage to target battle that player is protecting

you lose the game

Amulet of Vigor (Borderless) [The Lost Caverns of Ixalan Commander] Monkey Cleric pay life equal to itsSet: The Lost Caverns of Ixalan Commander Type: Artifact Rarity: Rare Cost: {1} Whenever a permanent enters the battlefield tapped and under your control, untap it. "Everyone is obsessed with this cosmium stuff, but I can sense some kind of comparable power in this droplet of ancient amber." Quintorius Kand, research notes