Simic Keyrune
d039aae6-38f5-42b5-a530-e0dd03abc7d5
$0.50 CND
{T}: Add {G} or {U} to your mana pool.
{G}{U}: Simic Keyrune becomes a 2/3 green and blue Crab artifact creature with hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)