Jace's second loyalty ability doesn't care which player's graveyard has twenty or more cards in it
I don't like that tradeoff, so I don't run him maindeck
An opponent with a lot of playable cards may also commit to adding 510 extra cards to their deck after game 1, so dont count on it working the same way after sideboarding
Plus, if you're losing track of the many, many Pokmon gadding about these days, allow us to save the day with our definitive answer to the eternal question: how many Pokmon are there?
Rolling dice is just as random as flipping a coin, and most people bring dice to games to track life or for random effects like random discards
This is a downside if you're removing +1/+1 counters or similar, but removing a lore counter from a saga is all upside, keeping it in play for another turn and rebuying your earlier saga abilities