Kothkesh, Forged by Unity

Equipped creature gets +2/+2 and has first
strike, deathtouch, and "Whenever this creature
deals combat damage to a player, that player sacrifices all nonland permanents they control."
Whenever you cast an artifact spell, return this artifact from your graveyard to the battlefield.
Whenever you cast an instant or sorcery spell,
you may equip this equipment to a creature
you control.