During any turn you attacked with this creature, you may play that card
There are lots of moving parts in this deck but to put it simply, the heavy ramp focus allows you to quickly build your board and Omos capacity to tack an everything counter on lands and creatures has plenty of opportunity for payoff
If the card is a creature, it will have its power and toughness in the bottom right
This means opening more packs, either relying on dumb luck or saving up Pack Points earned with each opening to try to buy the single you need
If you play her, I highly, highly, highly recommend vehicles with ETB abilities, for example Imposter Mech in specific, as a clone vehicle she can crew by herself AND that can get you any opponent's etb effects whenever you blink it itself