When resolving a fused split spell with multiple targets, treat it as you would any spell with multiple targets
Then you can pull counters off it for one mana each to load flying counters onto other dorks
However, Arceus's " Starbirth " - which allows players to pick two cards from their deck and then shuffle - is an incredibly strong ability
It is usually only played when it can be cast off the back of a Channel or you are splashing for other ways to cheat it in
The reanimated creature also gets to attack, and this synergizes with efficient creatures, creatures with additional downsides when cast, or simply creatures that have good enter effects
With this deck, you'll always have fun, either by dealing damage with burn, creating creature and treasure tokens, or drawing a lot of cards