Invocation is in there for more gas so you can fuse off of pranks in your hand or if you have more gas make more interruptions.
If you dont open spright dw, you can lead your prank combos into sprights. Just end on dropsies after dumping the required mats for battle butler.
Flex spots are apollo, unihorn, and purgatrio.
You can replace them with underworld goddess, accesscode, and knightmare Pheonix/Cerberus
Small world bridges are everywhere, fansies can search aleister off of ash, an dark spright can search aleister off of rocksies. Rocksies can search red or carrot off of lampsies. Lampsies can search aleister off of rocksies. Im sure there is more i can't think of.