The Masamune

As long as equipped creature is attacking, it has first strike and must be blocked if able. Equipped creature has "If a creature dying causes a triggered ability of this creature or an emblem you own to trigger, that ability triggers an additional time." Equip {2}

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oev83al1vpb1hyamkw9it.