Certainty of Purpose

When Certainty of Purpose enters the battlefield choose a planeswalker type.
If you have more than one planeswalker of the
chosen type you cannot activate abilities of planeswalkers with that type.
Sacrifice a planeswalker of the chosen type:
Add X loyalty counters to another planeswalker
of the same type. X is the number of loyalty
counters on the sacrificed planeswalker.