you won't need to worry about it losing value
Inevitable Defeat Inevitable Defeat, besides being uncounterable, sits in a region between Anguished Unmaking and Utter End, and should be a Mardu staple in EDH, at least
The full texts of these abilities are "At the beginning of the monarch's end step, that player draws a card" and "Whenever a creature deals combat damage to the monarch, its controller becomes the monarch." (2025-06-06) If the triggered ability that causes the monarch to draw a card goes on the stack and a different player becomes the monarch before that ability resolves, the first player will still draw the card
Going further, you have ways to find the combination with Ranger-Captain of Eos and Enlightened Tutor
When determining whether to keep your hand or mulligan, its useful to visualize how the next several turns can play out
A lot of what I like about Pocket is about how different it is from the physical game, but Shining Revelry makes it seem like Pocket is starting to give in to Pokemon TCGs worst features