The most potent strategy is to play reactively
Both of these have been reprinted a few times in sets and plenty of times in other products, as they are simple, but very playable
The deck would lose some consistency, but you gain so much more explosiveness and resiliency that it would be an easy inclusion, especially when combined with Lurrus of the Dream-Den
Both of these will create a creature during your upkeep
The term "defending player" in the myriad rules (or any other ability of an attacking creature) refers to the player the creature with myriad was attacking at the time it became an attacking creature this combat, the controller of the planeswalker the creature was attacking at the time it became an attacking creature this combat, or the protector of the battle this creature was attacking at the time it became an attacking creature this combat
As long as a Creature has died in that turn, you get to destroy a target non-demon Creature in every end step