Cards like these, that let you play as many copies as you want in a deck, are often worth a couple bucks even when printed at common or uncommon
It's important to note that this sale used a BGS 10 grading scale , considered more rigorous than PSA
If the copied creature is a token, the new token that's created copies the original characteristics of that token as stated by the effect that created the token
1 pull from the treasure box per Match Win (Lorcana Pins, Stickers, and Lore Counters)
While four of these are exclusive to Collector boosters in the vivid Neon Ink foiling treatment (Aang, Zuko, Katara, and Toph for Air, Fire, Water, and Earthbending respectively), five more neon-less ones can also be found in Play boosters
Theres a lot of discussion online about the optimal number of turns to pay into Mystic Remoras cumulative upkeep, and the answer really depends on the situation