Its unclear how long any of these experiments will last, but all indications are that this is the way going forward
Lets say you have some Magic cards with a certain theme or mechanic you like, and you want to get more cards like them
Then, for each creature card in exile with one of these counters, create a tapped and attacking token copy
This test can be brought to a very sophisticate level using an external flash connected to a camera in an artisanal black box
When an MTG Battle card is played, its controller chooses a player to be its protector (there are restrictions on this depending on the Battle type)
In round 7, I played against Laura Takeda, who ran Roaring Moon, and Justified Gloves let me KO her Roaring Moon ex after it took the first Prize, basically winning me the matchup (its a fairly simple Prize race, so if I can take the first two-Prize KO, Im basically winning)