Skittering Crustacean is a common Creature — Crab card from Magic: The Gathering (Treasure Chest, PZ2).
Common
Treasure Chest (PZ2)
{2}{U}
Power / Toughness
2 / 3
Mana Value
3
Colors
U
Card Text
{6}{U}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)
As long as this creature is monstrous, it has hexproof. (It can't be the target of spells or abilities your opponents control.)