yugioh deck shaddoll Schism may be 1st or Unlimited Edition Shaddoll Dragon Structure Deck: Shaddoll

C Common King Scarlet X TRAP Continuous If a "Red Dragon Archfiend" monster you control battles, during damage calculation: Make that monster you control unable to be destroyed by that battle, and if you do, Special Summon this card as a Normal Monster (Fiend-Type/Tuner/FIRE/Level 1/ATK 0/DEF 0)

It's like a permanent prowess boost that can be turned into blue and red mana without using the counters

ISBN 978-1-84162-345-0

Unranked: Non-Commander Octopuses Im a completionist, so Ill include Crafty Octopus

That alone is already neat, and the sort of modern-day-reference that M:TG can't make in regular sets

Often players would use a card like Tinker to search out any artifact at all, with options that cost far more mana