Captain Rex seems like an incredibly unique and interesting commander to build around, and hey, you dont need to know anything about Attractions in order to run him
Aside from this, keep an eye on recurring events and tournaments, as theyre full of exclusive rewards like tokens, high-value sticker packs, and other goodies
1 or 2: This card cannot be destroyed by battle or card effects, until the end of your opponent's turn
As one of Magic's best free spell, it's played just about everywhere it's available, being a free counterspell and all, and in colors where it wont be hard to draw into more blue cards
(2023-10-13) You exile the cards face up
[Thoughts after playing for a while] Hand traps are not "absolutely essential no matter what" People often say you need to get three copies of "Ash Blossom & Joyous Spring," but personally, I think you should prioritize cards that allow your deck to perform its strong moves