When this happens, each Character deals damage equal to their strength to the other Character
Smooth fixing with Command Tower, Path of Ancestry, Exotic Orchard, Unclaimed Territory, Secluded Courtyard, fetches like Evolving Wilds/Terramorphic Expanse, and tri-lands (Seaside Citadel, Sandsteppe Citadel, Arcane Sanctum, Frontier Bivouac, Opulent Palace, Crumbling Necropolis, Savage Lands, Jungle Shrine, Mystic Monastery, Nomad Outpost)
Dull them. You should have no problems dulling two to three characters, plus you can count cards that were removed from the game, so even if the card was removed out of your Break Zone by, say, Mist Dragon [9-068H], there wont be any issues
You have access to a host of Wizards to double damage from, including Black Waltz No