Mistform Sliver

Creature - Illusion Sliver 1/1, 1U (2)
All Slivers have "{1}: This permanent becomes the creature type of your choice in addition to its other types until end of turn."¹
Taking the form of a junior researcher, the first sliver slipped out of Riptide.
Illus. Ben Thompson

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: Unlike most type changing effects, this one adds a creature type instead of replacing existing creature types.

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (1/6)	Legions (Common)