Regarding this, some players have apparently found an exploit used to track the card you are after
If it's a creature card, put that card into your hand
(Scryfall note) Since you can respond to triggered abilities, it is legal to sacrifice creatures using some spell or ability prior to resolving the ability that removes the final counter from All Hallow's Eve
Divert Divert is one of the cheapest cards to redirect spells, acting as Spell Pierce most of the time
The caveat of all three types of energy needing to be different also makes it trickier to use, however, as some of the metagame's most powerful current combinations only utilise a couple of types, such as Duraludon VMAX decks that only use Dragon- and Steel-types Pokemon
What I really love about Morophon is that its colorless but gives you access to as few or many colors as you want