While not as cost-effective as buying singles, it's really fun
Theres a bit of a time investment here since you need to cut them out and sleeve them alongside regular cards, but its low enough effort, especially with the aid of a site like MTG Print
Unfortunately these tokens were mostly limited to cards from Innistrad: Crimson Vow , which limits deck-building options, but Bloods a good tool to have
These avatar horrors all have some stunning full art variations as well, with some of my personal favorite art in the set in Overlord of the Balemurk and Overlord of the Boilerbilges
As to when to stop torturing our aquatic friend, once you average turn 3 kills over a reasonably-sized number of games (or simply once you feel comfortable you wont miss these plays when also having to consider your opponents options), you should be ready to move on to playing actual games
Having to pay full price for the spell itself is a bit of a downer as well