Mana Vault [Foreign Black Border] Human Rogue Whenever an opponent sacrifices a

Whenever an opponent sacrifices a nontoken permanent

you may pay {4}

{R}: Target creature attacks this turn if able

Kongming's predecessor helped Liu Bei win the battle of Fancheng by recognizing and defeating Cao Ren's use of the dreaded "Eight Gold Locks" formation

Cycling {4}{U}{U} ({4}{U}{U}

Mana Vault [Foreign Black Border] Human Rogue Whenever an opponent sacrifices aSet: Foreign Black Border Type: Artifact Rare Cost: {1} Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.