Nidhogg, Bane of Yggdrasil

Trample, Deathtouch
{t},{b/g}: Destroy up to two basic lands.
{t}, {2}{b/g}{b/g}: Create a 2/2 dragon creature token with flying and deathtouch.
"Nidhogg's greed and hunger gnawed at the world tree, hastening the final struggle: Ragnarok."
-Norn of Days Past