Glamdring

Equipment that rewards a spell-heavy graveyard is a strange animal: it asks a creature deck and a spells deck to be the same deck. The +1/+0 per instant and sorcery in your graveyard is the obvious payoff, but it is the combat-damage trigger that dictates how the whole thing gets built. That trigger caps the free cast at the damage dealt to a player, which welds the two clauses into one loop: every spell you have already burned makes the sword hit harder, and every harder hit lets you cast a bigger free spell from your hand. What keeps the engine self-sustaining is that the spell you cast for free then lands in the graveyard as another counter, so it grows across turns without needing a dedicated storm count or copy shell. First strike clears profitable blockers before they can trade, keeping the body alive to keep connecting, but the trigger only cares about damage to a player: a chump block stops it cold unless the creature gets over or around the blocker, so trample or evasion does quiet load-bearing work. The brake is honest cost accounting: the equip is steep, and the free cast is bounded by how hard you actually connect, so the card wants a body that already threatens to get through. It is a spells-matter finisher for a creature that can carry it, an unusually literal bridge between two archetypes that rarely share a list.