mtg cards like aetherize RAINBOW FOIL Secret Lair Drop Peach Momoko 1667 NM Aetherize x1 NM Gatecrash MTG

These are powerful keywords to throw around

Thus, I'm not really expecting their popularity to increase, as people don't really seem to care about this kind of effect anymore

Be aware that everyones decklist is different and small changes can fix things drastically I rarely sideaboard the same: the sideaboard guide I present you with is just to give you an idea how I usually approach the matchup against the stock versions: They have Robber of the Rich post board which can be quite annoying but besides that the games post board are usually easy

Lightning Greaves Lightning Greaves helps you strike immediately and the auto-equip makes all your incoming creatures more threatening

their spoiler is the Blue Sorcery spell Confiscate Riches (credit for translation goes to reddit user osieorb18)

This change has been made for the upcoming Unfinity set, which features several cards playable in Eternal formats