Add to that the possibility of destroying some (or all) of the creatures on the board and suddenly Rakdos becomes a lot better
With Blood Crypt, Hallowed Fountain, Overgrown Tomb, Steam Vents, and Temple Garden returning, decks once again gain access to fast, flexible color fixing
This card is a one-time use, which is significantly worse than the previous cards effect that triggered each turn, but dinosaurs are a much more prevalent and powerful tribe
Aetherflux Reservoir I like to kill people
Plasma Transfer lets you move Plasma Energies around as if you were some sort of Plasma Hydreigon DRX
That's not good as you might need them to attack again, so to take them out of their misery and make them return to your hand, you'll be using the Energy Retrieval and the Superior Energy Retrieval