Encantamiento
Cuando la Alquimia arterial entre al campo de batalla, crea una ficha de Sangre por cada oponente que tengas. (Es un artefacto con "

,

, descartar una carta, sacrificar este artefacto: Roba una carta".)
Las fichas de Sangre que controlas son Equipos además de sus otros tipos y tienen "La criatura equipada obtiene +2/+0" y la habilidad de equipar

.
If a Blood token is somehow both a creature and an Equipment, it can't be attached to a creature.
If you control more than one Arterial Alchemy, creatures equipped with Blood Equipment will get +2/+0 for each Arterial Alchemy. The equip cost is still
.
Blood tokens stop being Equipment if Arterial Alchemy leaves the battlefield. If any of them are attached to creatures at that time, they become unattached.
You can't sacrifice a Blood token to pay multiple costs.
If an effect refers to a Blood token, it means any artifact token with the subtype Blood, even if it has gained other subtypes.
Some triggered abilities trigger "whenever you sacrifice a Blood token." These abilities trigger regardless of why you sacrificed that Blood token.