Kolle, Lategame Tactician

Ward {2}
You keep mana when phases end.
After combat on your turn, for every turn "Kolle, Lategame Tactician" is on the battlefield, you may create one mana of any colour.
{3}{t}, sacrifice two creatures —you may cast a spell from your graveyard without paying it’s manacost.
{3}{u}{b}{r} —Copy target spell, you may choose new targets for the copy.

For every unspent mana "Kolle, Lategame Tactician" deals one damage to you at the end of your turn.