Since energy is generated automatically based on the types of Pokemon in your deck, it's wise to focus on one or two types to maximize energy efficiency
Spells that were cast before Alisaie Leveilleur entered count
However, While Wulfgar costs five mana and only doubles triggers based on its controller's creatures attacking, Isshin costs two less mana whilst also doubling triggers that may care about an opponent's creatures attacking, making Isshin simultaneously more flexible and more efficient of an option
And really, there's no ability that could possibly fitting a sending more than simply exiling a target creature out of any given graveyard
These two cards dont give you a Squirrel payoff, but they both give you Squirrel tokens
However, the world rule delineates that only the newest world enchantment that was played will remain in play, no matter what the others name is