Best No Maximum Hand Size Payoffs Infinite hand sizes are more useful as a late-game play
The good news is that they will definitely reduce in price but they will always be pricey, as we can see with the most collectible Eeve-themed cards from Evolving Skies
If a vanilla 2/2 is the classic two-mana creature, then a 1/1 with this ability suggests that forcing an opponent to discard is worth roughly one power and one toughness worth of stats
In current builds of Affinity, I might try one to start, but Thought Monitor and Nettlecyst are the only things really worth hitting, so Thoughtcast seems better
By hiding your counter in the exile zone, you are almost assured it will be available when you need to shoot a spell down
Laelia, the Blade Reforged also gets better with this card, allowing you to grow her when you exile those cards from your graveyard