Or could they potentially be used at the end of my turn, after they ETB, but before my turn officially ends
For example, if you control two Cursed Wombats, each with no +1/+1 counters on them, and you activate the adapt ability of one of those Cursed Wombats, you'll put two +1/+1 counters on that Cursed Wombat, and then each of its granted triggered abilities will trigger
Even other multicolored decks that leverage this mechanic, like one featuring Edea, Possessed Sorceress as the Commander, can make great use of these cards
As one of the better copy cards around, Flash Photography makes for an enticing addition to any deck focused on the mechanic
Moderns banlist is more than 50 cards, and much more likely to grow than shrink, while Standards is always quite small