Part of finding a new mechanic isn't necessarily finding space we've never covered (although we do try to do some of that) but finding something that works within your set and/or block and then concentrating that mechanical aspect onto a higher number of cards
For example, if an effect allows you to cast a permanent spell with mana value 3 or less from among cards in your graveyard, you could cast Bottomless Pool this way, but not Locker Room
Its why you need to learn how to identify rare Magic the Gathering cards by their symbolsit can save you from overpaying for a Common or Uncommon card that you could easily find in your next booster pack
Judith, Carnage Connoisseur Legendary Creature Human Shaman Whenever you cast an instant or sorcery spell, choose one That spell gains deathtouch and lifelink
Chapters two and three grant a big mana boost, which can also be nice, but since youre already on six plus mana by the time this comes around its probably going to waste