Raze

Ward {2} (Whenever this creature becomes the target
of a spell or ability an opponent controls, counter it unless that player pays {2}.)

Equipped creature gets +2/+1 and has ward {2}.

Symbiosis {4} ({4}: 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.)