That's a lot to ask, but the flexibility allows you to take opponents out without them noticing
We appreciate that attitude because it's what makes the Cardsphere roll round
This is probably efficient enough to slide into some non-energy UW lists, but for dedicated energy decks its an A+
add 1 " Crystal Beast " monster and 1 Field Spell from your Deck to your hand
They all share the effect that let them Special Summon themselves from the GY whenever 2 or more monsters are sent to the GY at the same time (but are banished when they leave the field)
(2) During the Main Phase (Quick Effect): You can Tribute 1 monster (if you control Toon World, you can Tribute 1 opponents monster, even though you do not control it), and if you do, Special Summon 1 monster from your hand or Deck that mentions Toon World, ignoring its Summoning conditions