Bloodwalk

The caster may use any creature with blood to teleport themselves to another creature with blood anywhere on the current plane of existence. If the creature the caster is entering is unwilling than make a melee spell attack. The exit creature does not need to be known to the caster; however, the caster must decide direction and distance they wish to travel (i.e. North, 15 miles) and emerge from the nearest suitable creature. Upon exiting the caster may choose to do damage of 10d6 with a DC Con save for half.

To exit a known creature the caster must be able to see them or have a vial of their blood.