Primal Rage (Premium Foil) [Tenth Edition] 164 and keep a watchful eye

and keep a watchful eye on their workforce

Set: Modern Horizons Type: Enchantment Rarity: Mythic Cost: {2}{G} Whenever you cast a permanent spell with a mana cost that contains {X}

Set: POP Series 3 Type: Fighting Rarity: Uncommon Retreat cost: Colorless

then sacrifices all creatures they control

"Control the Great Conduit

Primal Rage (Premium Foil) [Tenth Edition] 164 and keep a watchful eyeSet: Tenth Edition Type: Enchantment Rarity: Uncommon Cost: {1}{G} Creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.) Ferocity and cunning accounted for half the victory. Gravity accounted for the rest.