mtg card arena Starter Kit (2020 ed) — Twenty Sided Legendary creatures don’t untap during their controllers’ untap steps Stronghold Arena · Dominaria United

To start with, this card is an absurd combination of immediate abilities and stats for 2 mana

A deck that focuses on controlling the board and disrupting opponent's creature strategies, such as red control or burn decks, would benefit from using Aether Flash to limit the effectiveness of creature-based strategies

If the finite printing of serialized cards behave anything like the Reserved List, the value is definitely there and likely to go up

It doesn't copy whether that token is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, or so on

Note that a bonus sheet card only appears in one in every three packs, and uncommons appear far more than mythics