Mardu Ascendancy [Khans of Tarkir Promos] Human Barbarian Sacrifice Engineered Explosives: Destroy each

Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives

and it was his weakness that pushed him

"Superior force meets woefully inadequate object

Set: Unlimited Edition Type: Artifact Rare Cost: {3} {1}: The next time an unblocked creature of your choice would deal combat damage to you this turn

Mardu Ascendancy [Khans of Tarkir Promos] Human Barbarian Sacrifice Engineered Explosives: Destroy eachSet: Khans of Tarkir Promos Type: Enchantment Rare Cost: {R}{W}{B} Whenever a nontoken creature you control attacks, create a 1 1 red Goblin creature token that's tapped and attacking. Sacrifice Mardu Ascendancy: Creatures you control get +0 +3 until end of turn.