William B. Purvis

William B. Purvis assigns combat damage with its toughness instead of its power.

When William B. Purvis enters the battlefield, create a colourless Fountain Pen equipment token with Equip {2} and "Equipped creature gets +0/+2 and assigns combat damage with its toughness rather than its power"

Whenever you cast an instant or sorcery spell, create a tapped blue Inkpot artifact token with "{t}, sacrifice this artifact: add {u}".