While the engine at the heart of the deck was Cadaverous Bloom it would not have been even remotely competitive without Squandered Resources, as banning this card proved
This is an easy way to knock out one of your opponents weaker Pokemon or even stop their basic Pokemon from getting a chance to evolve in the first place
Some effects like Repeated Reverberation will create a delayed trigger that copies a loyalty ability late that turn, which means it doesn't have to actually target anything on the stack
This straightforwardness does mean a green deck lacks options if it loses momentum
The card itself is a great bit of recursion on the front side, and its flip side Leyline Surge can give you a huge advantage
Or just the ol' threaten and sac, stealing a 6-drop from your opponent for a turn, sacrificing it, and dealing 8 direct damage to any target