Gelectrode, Dragon-Mind

Whenever you would tap land for mana add an additional {u} or {r} to your mana pool.
{2}{u}{r},{t}: Gelectrode deals X damage to target creature or player, where X is the number of non-creature spells cast this turn, then draw a card. If more than 4 damage was dealt this way, untap Gelectrode.