Rynastere, Sunlit Battlearena

{t}: Add {2} to your mana pool. You lose 3 life.
{t}: Host. (When this card hosts, target creature you control deals damage equal to its power to target creature you don't control. No spells can be cast during this time, and this does not count as a combat step.)
This was the first of Elceron's challenge, but the champions were too powerful for them to be an impediment.