Fornalha Estrondosa / Sauna a Vapor / Roaring Furnace / Steaming Sauna

Roaring Furnace
{1}{R}
Enchantment — Room

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

When you unlock this door, this Room deals damage equal to the number of cards in your hand to target creature an opponent controls.

Steaming Sauna
{3}{U}{U}
Enchantment — Room

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

You have no maximum hand size.

At the beginning of your end step, draw a card.

Illustrated by Miklós Ligeti