Rattleclaw Mystic is a rare Creature — Human Shaman card from Magic: The Gathering (Magic Online Promos, PRM).
Rare
Magic Online Promos (PRM)
{1}{G}
Power / Toughness
2 / 1
Mana Value
2
Colors
G
Card Text
{T}: Add {G}, {U}, or {R}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, add {G}{U}{R}.
