Disufiroa

Devoid, flying, ward {2}

{w}{r}, {t}: Disufiroa deals 4 damage to each other
creature and 2 damage to any target. This damage can't
be prevented. Activate only as a sorcery.

{w}{u}, {t}: Tap all non Snow lands. If you spent mana
produced by Snow sources to activate this ability, put a
stun counter on each of them. Activate only as a sorcery.

Where fire and frost collide, only silence survives.