Ronn, Conclave's Forefather

Territorial —Whenever a land enters the battlefield under an opponent's control,
create a 1/1 green Elf creature token.
{4}{g/w},{t}: All non-token creatures lose all abilities,
stop being creatures, and become basic forest lands until end of turn
(they can tap for mana even if summoning sick).
Whenever Ronn untaps, target opponent creates
a 2/2 black Zombie creature token.