Bow to My Command is a common Ongoing Scheme card from Archenemy: Nicol Bolas Schemes (OE01), collector number 3★. Current market price: $2.75, TCGplayer market prices via Scryfall.
(An ongoing scheme remains face up until it's abandoned.) As you set this scheme in motion, choose an opponent. Creatures the chosen player controls can't attack you or planeswalkers you control. At the beginning of your opponents' end step, they may tap any number of untapped creatures they control with total power 8 or greater. If they do, abandon this scheme.