
You have no maximum hand size.
Sonic Booster — Whenever Nyssa of Traken attacks, sacrifice any number of artifacts. When you sacrifice one or more artifacts this way, tap up to that many target creatures and draw that many cards.
Doctor's companion (You can have two commanders if the other is the Doctor.)
Nyssa of Traken has 4 printings, first in Doctor Who (2023). EDHREC ranks it #13,692 among Commander cards. It appears most in The Fourth Doctor // Sarah Jane Smith decks (734 on EDHREC). 1 public deck on TCG runs it. It has 9 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.