Factions Best Warrior

When Factions Best Warrior enters the battlefield, choose a guild. Factions Best Warrior
has that guild's colors. All cards with the
watermark of the chosen guild cost {2} less to
cast, with a minimum of {2}. Everytime another duelist creature with the watermark of the chosen
guild enters the battlefield, you gain 5 life.
"Each faction would send out their best warriors to
these games to duel one another."—from The
History of Cier, Chapter 7: The Duels