Tyvar, The Astropath

Flying, vigilance, hexproof
{b}{b}{t}: Destroy target land.
{1}{u}{u}{t}: Counter target spell.
{2}{w}{w}{t}: Each player with a creature 4 power or greater draws a card. Destroy all other creatures.
{5}{r}{r}{t}: Destroy target land. Deal 20 damage to
each other creature and each planeswalker.
{x}{g}: Deal X damage to each other creature with flying.