Creature — Shapeshifter 2/4, {U/R}{U/R}{U/R} (3)
Uncommon
{U/R}: Switch Crag Puca's power and toughness until end of turn.
"Be happy when you see a puca shaped like mischief. It's far better than one shaped like death."
—Dindun of Kulrath Mine
Illus. John Howe

10/1/2009: When figuring a creature's power and toughness, apply effects in a series of sublayers in the following order: (a) effects from characteristic-defining abilities; (b) effects that set power and/or toughness to a specific number or value; (c) effects that modify power and/or toughness but don't set power and/or toughness to a specific number or value; (d) changes from counters; (e) effects that switch a creature's power and toughness. This means that effects that switch power and toughness are always applied last when determining a creature's power and toughness, even if other power/toughness-changing effects are created later in the turn.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern