Spellsword Grephen

Battlecraft (This spell costs {1} less to cast for
each source that dealt damage to an opponent
this turn.)
When Spellsword Grephen enters the
battlefield, it deals X damage to target creature,
where X is the number of spells you've cast with
different card types this turn.
You called me a jack of all trades, but master of none.
Yet all of mine are still better then yours.