Temple of Schemes

Temple of Schemes enters the battlefield tapped.
When Temple of Schemes enters the battlefield, target opponent may gain control of a non-legendary permanent you control with converted mana cost 3 or less. Then you may gain control of a non-legendary permanent with converted mana cost 3 or less that that opponent controls.
{t}, pay 2 life: Add {u} or {b} to your mana pool.