Creature — Elemental 2/8, 4G (5)
Uncommon
When Jaddi Lifestrider enters the battlefield, you may tap any number of untapped creatures you control. You gain 2 life for each creature tapped this way.
Nature's arms encircle all who are willing to draw close.
Illus. Vincent Proce

6/15/2010: You don't choose which creatures to tap until the ability resolves. You may tap Jaddi Lifestrider itself this way, assuming it's still on the battlefield untapped by this time.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern