Dystopia [Alliances] Dwarf Sacrifice Powder Keg: Destroy each

Sacrifice Powder Keg: Destroy each artifact and creature with converted mana cost equal to the number of fuse counters on Powder Keg

/ Which tells us the way to go

Empyrial Tactician enters the battlefield or a creature you control deals combat damage to a player

Designed to carry equipment across rivers

or toughness

Dystopia [Alliances] Dwarf Sacrifice Powder Keg: Destroy eachSet: Alliances Type: Enchantment Rarity: Rare Cost: {1}{B}{B} Cumulative upkeepPay 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of each player's upkeep, that player sacrifices a green or white permanent.