Freya, Dragon Knight

You don't lose unspent red mana as steps and phases end.
Knightcraft — Whenever you cast or copy an instant or sorcery spell, discard a card, then
draw a card. If this is the second time this ability has resolved this turn, Freya, Dragon Knight deals 2 damage to each opponent and
each creature they control. If it's the third
time, add {r}{r}{r}{r}.