Hinder. (This Companion can't attack or use its active abilities the turn it comes into play.)
Stone-Shell Turtle is unaffected by Spells and abilities. (It can still be damaged by them.)
Primitive warriors would craft shields and armor from their shells.
2 Attack (A) / 7 Health (H)
Frequently Asked Questions
Hinder just prevents Stone-Shell Turtle from attacking or using active abilities the first turn it's in play, so causing it to enter play on another player's turn would let you use it on your turn.
Stone-Shell Turtle is unaffected by ALL Spells and abilities, not just ones that target him, whether they be enemy or allied.
Spells and abilities that deal damage still function as normal, just the other effects are ignored.