Tromokratis is a good general once out

Whenever equipped creature blocks or becomes blocked by a creature, destroy both creatures. Equip (: Attach to target creature you control. Equip only as a sorcery.)

Indestructible Equipped creature has indestructible. Equip

Tromokratis has hexproof unless it's attacking or blocking. Tromokratis can't be blocked unless all creatures defending player controls block it. (If any creature that player controls doesn't block this creature, it can't be blocked.)