Thats in stark contrast to your game one plan, where youd normally expect to be throwing down discard as fast as possible to get some trade while its relevant
In a singleton format you have to run a set of cards that all fulfill the same basic function, so instead of running 4 copies of Harmonize, you might run Harmonize, Greater Good, Beast Whisperer, Return of the Wildspeaker, Garruk, Primal Hunter, Shamanic Revelation, Soul's Majesty and Rishkar's Expertise
Whenever a creature has four or more fuse counters on it, remove all fuse counters from it and destroy it
player must attack those monsters in combat to clear the way before attacking the opponent's life points directly
This stands true even for competitive Magic
It is likely that cards from those two blocks will be included in the cards that are added to MTG Arena for Historic play