Infernity Sage currently starts at $ 0.09
a " 5D's " [Yugioh 5D's Card Game Official Website] (in Korean)
Actually, let me rephrase that: this Archetype basically takes "Trick-or-Treat" to a rather logical extreme, being able to set up a lot of "Tricks" for your side, while offering "treats" (drawing power) to your opponent in the hope of giving them a proverbial "tummy-ache", if you will
Destroy 1 Pendulum Monster Card you control, and if you do, add 1 "Senet Switch" from your Deck to your hand
You can only use each effect of "Fiendsmith's Desirae" once per turn
At first glance, it might seem incompatible with Tenyi monsters or Level 7 Brave monsters that state "can only be special summoned when there are no monsters on the field," but the former does not count Normal Monsters as monsters, and the latter can be special summoned by chaining to the effect of Magicians' Souls, so there is really no problem at all in dealing with Bystials