Nagendra, The First Born

Flying, First Strike, Haste, Trample, Hexproof
{t}{x}{w}{u}{b} Nagendra, The First born deals
Half X damage to target creature rounded
down each time
{w}{w}{u}{u}{b}{b} You gain 3 life
{t}{3}{w}{u}{b} destroy target Enchantment or
Artifact you dont control