To me, a TCG player who uses this older app a lot, Pokmon TCG Pocket is everything I wish my card game client was, and that makes me angry
For starters, one notable interaction is how well it plays with Fetchlands
The Sideboard The cards in our sideboard are designed to do three things: help improve our matchup against aggressive creature decks (by far our worst matchup), fight three-mana planeswalkers (especially Teferi, Time Raveler but also Narset, Parter of Veils and Oko, Thief of Crowns), and answer graveyard-based decks (which we actually help by filling their graveyard with our mill spells)
A card's value can shift based on new set releases, tournament popularity, or even a wave of nostalgia hitting the community
I wouldn't call a rule-abiding competitive spike impolite, but you should still maintain table manners and ask if someone wants to share their porridge