Credit: Wizards of the Coast Null Elemental Blast TheChirurgeon: This is a really sweet little one-mana answer
Others can join in the Round to increase the power of the attack
You dont need to pair it with Treasure, but we all know thats where this is headed, even if it has utility alongside Clues, Food, and cards like Bosh, Iron Golem
As such, Mirror Force has become irrelevant
ST5-13 SR Digimon Lv.6 BlitzGreymon Color Black Cost 12 DP 12000 Digivolve Cost 1 Black 4 from Lv.5 Form Mega Attribute Virus Type Cyborg Card Text 1 [Effect] Security Attack +1 (This Digimon checks 1 additional security card.) [Main] Digi-Burst 2 (Trash 2 of this Digimon's Digivolution cards to activate the effect below.) 1 of your Digimon gets +4000 DP until the end of your opponent's next turn
That deck used dorks and Lotus Cobra to power out Stormbreath Dragon and Goblin Dark-Dwellers, or to set up high-velocity looting chains with its eight cantrips