Blake, Fierce Protector

Whenever Blake, Fierce Protector blocks,
becomes blocked, or becomes the target of a spell
or ability, create a 0/3 colorless Cat creature token
with "{1}:The next time a source of your choice
would deal damage to Blake, Fierce Protector, it
deals that much damage to this creature instead"
and "When Blake, Fierce Protector leaves the
battlefield, exile this creature".
Sacrifice a Cat Ninja creature token: Add one
mana of any color to your mana pool.