The o5 Council

{w}{u}{b}{r}{g}: exile all other anomalies with a containment counter on them. You may distribute X +1/+1 counters among creatures you control where X is twice the number of exiled cards.

When The o5 Council leaves the battlefield, return all exiled cards with containment counters on them to the battlefield under their owners control with a +1/+1 counter on them