Plakorian Blood Bender

{1}{b}: Pay X life: Plakorian Blood Bender gains
+X/+X until end of turn where X is half the
total amount of life paid this way rounded down.
Activate this ability only at a time when you
could cast a sorcery spell.
When Plakorian Blood Bender deals damage, Sacrifice it.
"The blood of the dead is a wondrous thing."
- Red Forest Village Elder