Skulking Fugitive

When this creature becomes the target of a spell or ability, sacrifice it.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

When this creature becomes the target of a spell or ability, sacrifice it.

Flying

When this creature becomes the target of a spell or ability, sacrifice it.

Flying

Whenever this creature becomes the target of a spell or ability, you lose 1 life.

Flying

Whenever a creature becomes the target of a spell or ability, destroy that creature.

Flying

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has "When this creature becomes the target of a spell or ability, sacrifice it."