Argenonnda, Titan of harvest

{w}{2}: add {5}.
{u}{3}: scry 4, then draw 5 cards.
{b}{4}: destroy 3 target permanents with converted mana cost less than 5.
{r}{5}: target human gets -5/-1.
{g}{6}: target creature and this creature gets +7/+7 and gains trample until end of turn.
{x}{r}{g}: exchange control of x target lands. Indestructible, reach.