Wanderwine Prophets

Creature - Merfolk Wizard 4/4, 4UU (6)
Champion a Merfolk (When this enters the battlefield, sacrifice it unless you exile another Merfolk you control. When this leaves the battlefield, that card returns to the battlefield.)
Whenever Wanderwine Prophets deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an extra turn after this one.¹
Illus. Alex Horley-Orlandelli

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/9)	Lorwyn (Rare)