One of the best ways to counter them is to play a deck that uses single-Prize attackers that are able to deliver Knock Outs, so you trade two Prizes (or three, in the case of a TAG TEAM) for one
Cards like Adeline, Resplendent Cathar and Anim Pakal, Thousandth Moon easily rack up melee triggers in addition to exploiting the additional combat
One might even venture (Im thinking about it), that for early Magic, world-building was primarily about providing a usable and attractive user-interface for a rules system
Curse of Bounty is an interesting inclusion that I really enjoy in this deck, and I think it helps speed up potentially slow precon games
Just getting something with a useful energy ETB is often enough to really start rolling, as even copying a Conduit Goblin nets you 4 energy
This means that these strategies are far more reliant on Supporter cards like Janine's Secret Art and Crispin