Scalding Tarn

{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

Priest of Urabrask

When this creature enters, add {R}{R}{R}.

Inga Rune-Eyes

When Inga Rune-Eyes enters, scry 3.
When Inga Rune-Eyes dies, draw three cards if three or more creatures died this turn.

City of Traitors

When you play another land, sacrifice this land.
{T}: Add {C}{C}.

Herigast, Erupting Nullkite

Emerge {6}{R}{R} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, you may exile your hand. If you do, draw three cards.
Flying
Each creature spell you cast has emerge. The emerge cost is equal to its mana cost.

Simian Spirit Guide

Ancient Tomb

{T}: Add {C}{C}. This land deals 2 damage to you.

Lotus Petal

{T}, Sacrifice this artifact: Add one mana of any color.