Cavorite, Lord of Lightning

Cavorite, Lord of Lightning costs {1}{u/r}{u/r} less for
each instant or sorcery in your hand and/or
graveyard
haste, trample, flying
{r}{t} deal 3 damage to target creature
spells you cast cost {2} less to cast
spells an opponents cast that target a creature cost {2} more to cast