Venom

Menace

Equipped creature has base power and toughness 5/5. has menace, and is a black Symbiote in addition to its other colors and types.

Symbiosis {2}{b}{b} ({2}{b}{b}: Attach to target creature you control: or unattach from a creature. Symbiosis only as a sorcery, and only one per creature. While attached, this isn't a creature.)