So, if you have a Druddigon in your Active (who typically doesnt need any Energy to fulfill its role), Rough Skin does 20 DMG and as you attach Energy to Darkrai in your Bench, theres another 20 DGMF, totally the net damage you do to your opponents Active Spot Pokmon to a staggering 40 DMG
Trainer - Supporter Shuffle your hand into your deck
Village Rites offers a similar effect for a lower upfront cost, but not allowing you to sacrifice an artifact makes it a bit less flexible, and the Treasure is a huge addition to this effect
During your Main Phase: You can add 1 Fissure or 1 Smashing Ground from your Deck to your hand
During your opponent's Main or Battle Phase (Quick Effect): You can banish this card until the End Phase, then if you banished this card with 2 or more Xyz Materials, you can also send 1 Fusion Monster from your Extra Deck to the GY that lists "Fallen of Albaz" as material
Maybe you can unearth a creature with a cast trigger to cheat its mana cost, only to clone it with a Phantasmal Image