Oh, and instant speed, of course
Create X 1/1 white Vampire creature tokens with lifelink, where X is the number of other attacking creatures
Oona also works particularly well with cards that check when creatures come into play, like Kindred Discovery and Dire Undercurrents 3 Tegwyll, Duke Of Splendor A true Faerie lord, Tegwyll, Duke of Splendor works to give your other Faeries a boost in power while ensuring that you can still gain advantage even after death
Matoya, Archon Elder Final Fantasy introduced Matoya, Archon Elder, which is a total engine for any deck that likes to scry or surveil
If Bound ripples, and you find another copy of Bound and Determined, you cant use that trigger to cast the Determined side because its considered to have a different name than the spell you cast
Thats why even a Poor version of the card is worth 19.000