Lena, Selfless Champion
Core Set 2019 — rare
Legendary Creature — Human Knight
Lena, Selfless Champion rulings:
2018-07-13: The number of nontoken creatures you control is counted only as Lena’s first ability resolves. If Lena is still on the battlefield (and not somehow a token), it will count itself.
2018-07-13: To determine which creatures gain indestructible while resolving Lena’s last ability, use Lena’s power as it last existed on the battlefield.
2018-07-13: Lena’s last ability affects only creatures you control with the appropriate power at the time it resolves. Creatures you begin to control later in the turn won’t gain indestructible, and a creature you control whose power increases later in the turn won’t lose indestructible.