Godsend

Most equipment buys you stats and a keyword; this one buys you stats and a license to delete a creature the moment it commits to combat with yours. The exile clause is the whole design: blocking or being blocked is a guaranteed combat event, and the trigger resolves during the Declare Blockers step, before combat damage is dealt. That timing is the point. You exile the blocker or the attacker preemptively, which not only removes the creature but clears the way for your carrier to survive the exchange it just started. The +3/+3 does the setup work, sizing the equipped creature large enough to force those combats on your terms. Where most exile effects end at removal, the name-locking rider adds a second layer: while Godsend stays on the battlefield and that creature stays exiled beneath it, your opponents cannot cast spells with the exiled card's name. It is a lock, not an erasure. Destroy Godsend or otherwise free the exiled card and the restriction lifts, which is why the effect reads as an ongoing tax the weapon enforces rather than a permanent deletion. The cost sits in the equip and the legend rule, both steep enough that you commit a full turn to suiting up before any of it happens, and a single removal spell on the carrier strands the blade with nothing to wield it. Its flavor as a god-forged weapon that unmakes what it strikes is unusually well-married to the rules text: exile reads as obliteration, and the name-lock reads as the struck thing suppressed so long as the blade remembers it.