Viscer, Hyjack Chieftain

Haste, irate (Whenever this creature becomes the target of a spell or ability, untap it.)
Other exerted creatures you control get +1/+0
and have irate.
You may exert Viscer, Hyjack Chieftain as it attacks. When you do, instant and sorcery spells you cast that target one or more creatures you control cost {1} less until end of turn.