Since Archfiend only gets only counters when it enters the battlefield, the end result if that the opponent will have an Archfiend of the Dross with no oil, so you simply pass the turn and make your opponent die to Archfiend of the Dross's ability when they can't remove a counter on their upkeep
Its unknown whether your wins will factor into your rating when the program goes out of Beta, but even if it doesnt, the benefit of playing better players NOW at the cost of playing and winning more games is well worth it
#6 GX Ultra Shiny (28.0/40) The original shiny card set
Because TCG Island doesnt have all that many wild pokmon, though, Mark and other would-be battlers instead focus on playing with cards they either buy from machines or win in matches
This is a repeatable effect and doesnt satisfy the conditions of a ritual without help from lots of other cards around it, but I wanted to point it out anyway
If you don't mind settling for LP condition, you can find massive discounts, with some sales dropping to the $43 mark