
Sisay gets +1/+1 for each color among other legendary permanents you control.
{W}{U}{B}{R}{G}: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.
Sisay, Weatherlight Captain has 8 printings, first in Modern Horizons (2019). EDHREC ranks it #3,263 among Commander cards. It appears most in Jodah, the Unifier decks (16,475 on EDHREC). 1 public deck on TCG runs it. It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.