Tectonic Hazard

Tectonic Hazard deals 1 damage to each opponent and each creature they control.

Have

Whenever you cast an instant or sorcery spell, Erebor Flamesmith deals 1 damage to each opponent.

Return target nonland permanent to its owner's hand. (Then exile this card. You may cast the creature later from exile.)

Whenever an opponent casts a spell with mana value 3 or less, Scalding Viper deals 1 damage to that player.