I bet there will be like a 2 card limit or something and not much card draw to increase skill expression while keeping things pretty simple and increasing the impact of individual card pulls from packs It is designed to be a lighter, faster, and simpler alternative to the real PTCG
This cards name is perfect, as it extracts a tithe of a Treasure token and a possible card to play from the top of an opponents library whenever your creatures deal combat damage to that player
So, because you can summon the same monster you bounce with it, Swap is prefect in the deck as protection against Sakuretsu Armor, Snatch Steal, or anything else that might target a Sphinx, Gorilla, or squirrel
If youre a 90s child, Im sure its probably just the same for you
It also has Syrup Storm, which costs 2 Energy and deals 30 damage