Don Quixote, the Third Sinner

At the beginning of combat on your turn, up to
one target Blood token you control becomes an
Equipment in addition to its other types and has
"Sacrifice another Blood token: Equipped creature
gets +1/+0 until end of turn" and equip {1}.

Pay 5 life: Create a Blood token. (It's an artifact
with "{1}, {t}, Discard a card, Sacrifice this
artifact: Draw a card.")