WITCHES' REVEL: Card Index.

A Strike Spell.

6 ▲ Power

To Play:
You must have 2 or more Passion. Spend all of it.
If Playing This Overpowers:
Remove all +1s from your spells, then add them back to any spells (redistributed as you like).

Notes:

You can't play this card if you don't have 2 or more Passion.
+1s are tracked with counters on whatever they're added to. While added, they add +1 ▲ Power if on strike spells, and +1 ● Resistance if on shield spells.
When a spell leaves the field, any +1s on it are lost.
Adding +1s to a strike spell at its 'On Play:' moment will count when you check for overpower. Doing so after will not cause an overpower.
When this overpowers, remove all the +1s off your spells, and count how many you removed. Then, add exactly that many +1s back, redistributing them onto any combination of spells. You can put them back how they were, change how many each spell had, or add some to spells that didn't have any.
Adding +1s this way does not cause another overpower.