Nethroi, Apex of Death Casting Nethroi, Apex of Death for its mutate cost gives you your mana back in value, so long as you have a stocked graveyard
(Maybe) Kicker/Multikicker The reason these both showed up in past Zendikar sets is that land-centric themes tend to promote playing more lands, which tends to end up providing the players with more mana, making mana sink mechanics useful
If there is no scan or photo showing the back of the card, that card has a standard english back
In the case of 1999's Shadowless Holographic Charizard card, there's an additional value due to the age and rarity of the card type
In addition, you'll find determined Amber characters like the miners from Snow White and the Seven Dwarfs
Soul Warden, Soul's Attendant, and Auriok Champion all gain you a life when a creature enters, and stack together, so if all of them are on the battlefield, that's three life from just one creature entering