The other option is to take advantage of the direct damage, which is good in its own right to either finish off a damaged character or get them within range to be banished but also works with the likes of cards that benefit from being damaged - such as Scroop, Backstabber - that benefit from healing damage, like Rapunzel, Gifted Artist, or from damage being dealt: like Beast, Relentless.
Warrior's Sword and White Mage's Staff
Otharri, Suns Glory One of the most lethal Boros creatures you can slip into your Cube, Otharri, Suns' Glory often reminds me of Minsc & Boo, Timeless Heroes
These kinds of cards will almost always be your best bet here
Aerith giving all your other Legendary creatures counters represents her death galvanizing the party to complete their quest