Blade of the Dawn

Partner with Knight of the Dusk (When this permanent enters the battlefield, target player may put Knight of the Dusk into their hand from their library, then shuffle.)
Equipped creature gets +1/+1 and has "Whenever this creature attacks, target player gains life equal to its power".
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)