It sounds simple, but because there are few restrictions on who, or what, you can damage, it allows you to target cards that are Evasive, cards that aren't exerted, and, really, any card with willpower
First introduced in Wilds of Eldraine, the Adventure mechanic allows players to cast the Adventure half of a card, then later cast the other half from exile once the Adventure resolves
The set introduced role tokens, and has other great cards such as Stroke of Midnight, Blossoming Tortoise, Agatha's Soul Cauldron, and a cycle of strong virtues
You can find singles for all of these for fairly cheap elsewhere
The downside of Tocasias Welcome is that it will only trigger once a turn, but with a way to create tokens at instant speed or by casting cards with flash, you can trigger its draw effect on your opponent's turn
If you find a way to exploit his coin flipping ability, I'm sure it can be an incredibly powerful one, and the fact that it will work on each turn makes it even better
