Please note: Inverted Back is the commonly accepted term in the marketplace, which is why CGC Cards uses it, but technically, most trading cards have their backs printed first, so it is the front of the card that is actually inverted
Field Trip CMC: 2G Type: Sorcery Rarity: Common First ability: Search your library for a basic Forest card, put that card onto the battlefield tapped, then shuffle
Gist Gruul draw cards have both green and red in their mana costs and/or rules text if were talking Commander color identities
BPhillipYork: Neat, and gives you a way to sacrifice your big Titans in response to being exiled so they go back into your deck
It meets all three criteria
You are right , who cares about a blastoise card, but that does not mean there is no pop control