You don't have to spend the two mana on the same spell
some of these, to my knowledge, need some minor rewording to be a bit less clunky to read but other than that i'm really into the different effects and gimmicks, if you wanted to dip your toes into alchemy a bit I'd suggest a platinum as a potential boss monster (since you already used silver, the metal of the moon), either as a fusion of gold and silver (the alchemical symbol for platinum is literally just the gold and silver symbols next to each other because it was believed to be a composite of the two) or a rank 3/4 Xyz, possibly one with a sort of reverse gemini effect that makes it a normal monster when it runs out of materials, maybe a level 1/2 "moonfang ore pup" that can SS one of the others either on death or by self sacing
Spider Web Type Spell Card Typing Field TCG Date 2009-11-17 OCG Date 2009-07-18 Card Text If a monster declares an attack, it is changed to Defense Position at the end of the Damage Step
Component Pouch is another mana rock, but this one requires you to tap it to roll a d20 first in order to get component counters
The random-mix rule A random selection means the mix can vary across Pokemon, Trainers, set eras, artwork popularity and market liquidity