Kozas, Sunstopper

Whenever you discard a card, add {r}.
Whenever you lose unspent mana, Kozas deals
twice that much damage to you.
{t}, Discard three cards: Draw two cards.
The Solar Stasis, Kozas's magnum opus, froze the
plane's sun in its orbit, locking each region into a
perpetual state of light or darkness.