
You have no maximum hand size.
{T}: Add {C}.
Thought Vessel has 39 printings, first in Commander 2015 (2015). EDHREC ranks it #21 among Commander cards. It appears most in Y'shtola, Night's Blessed decks (33,523 on EDHREC). 27 public decks on TCG run it.
The first 24 of 27, by name.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.