Maju, the Inscribed Blade

Inscribe 2. (To inscribe 2, exile up to two cards
from your hand face down. They are inscribed
for as long as they remain exiled. You may cast inscribed spells as if they had flash by paying
their mana cost.)
At the end of each turn, if you've cast
two or more inscribed spells this turn, Maju
deals 3 damage to any target.