Also, if you have in play Sundial of the Infinite you can keep the token copies
Kiki-Jiki, Mirror Breaker is one such card, sending the token copy into battle and exerting it to get that extra combat step and untap all creatures
Prices may fluctuate the releases, but for now, the prices shown on M:TG Goldfish are good indicators of which cards will be true chase rares
Levelling up sometimes means another static ability is now in effect, and sometimes it triggers a triggered ability
In the right deck its a more impactful Gray Merchant of Asphodel, giving you some reach and helping you close the game through board stalls
Between the two, I think Merry has the edge in filling the board, while Pippin is best used to finish things off