Cliffside Market
Plane -- Mercadia
When you planeswalk to ~this~ and at the beginning of your upkeep, you may exchange life totals with target player.
Whenever chaos ensues, exchange control of two target permanents that share a card type.
Shifting Loyalties
{5}{U}
Sorcery
Exchange control of two target permanents that share a card type. (Artifact, creature, enchantment, land, and planeswalker are card types.)