War of the Spark

As War of the Spark enters the battlefield, choose
Bolas or Planeswalkers.
• Bolas — Whenever one or more +1/+1 counters
would be put on a Zombie token you control, put
twice that many +1/+1 counters on that creature instead.
• Planeswalkers — Whenever you cast a
planeswalker that doesn't share a planeswalker
type with another planeswalker you control enters
the battelfield under your control, proliferate.