Sleeper Agency

Double Agenda (Start the game with this conspiracy
face down in the command zone and secretly name two different cards. You may turn this conspiracy face up
any time and reveal the chosen names.)
Whenever a creature with the chosen name enters
the battlefield, you may have it lose all abilities
and gain "At the beginning of your upkeep, this
creature deals 2 damage to you." If you do, target opponent gains control of it