It used to be that you got a certain number of promos depending on how many Ikoria packs you bought on MTGA, or you earned them by playing the Ikoria draft events on Arena's schedule
A turn one Remora into a table of Sol Rings will level out the playing field at least a little and unlike Study, it costs 4 to prevent so youre more likely to profit off of your trigger
Players then build a deck of supporting characters, events, and stages to battle opponents
Kid, whenever he is played or he attacks, will give your leader a 1,000 power boost until the start of your next turn, making your leader a mini Whitebeard, or in Red/Purple Luffys case, a 7,000 wall to overcome
All that I relied on were cards that were performing exceptionally well in their role while still being useable in many others