Sorry to clutter up your thread with my suggestions but this stuff was fun to write up. 
Trial in Fire
“The warmth quickly becomes unbearable as you descend deeper and deeper into the ruins. The air vibrates with heat and you can barely see through the smoke around you. Your eyes, your throat, your tongue - they grow dry and sore, shrivelling up within you. Hopelessly lost in the thick smoke, there seems to be no escape from this fiery death trap.”
Try to flee(No requirement)
(50% Chance) “You stumble through the smoke with your shrivelling hands clawing upon the burning walls. Your feet shuffle aimlessly over the floor that seems to almost boil underneath you. Soon the burning inferno closes its fiery embrace around you, leaving your struggles all for naught.” (Unit is lost, ruin remains)
(50% chance) “Although you are struggling, you find your way back through the thick smoke and the roaring fires around you. When you finally reach the surface your clothes are charred, tufts of your hair missing, and your skin covered in burns.” (Unit suffers critical damage but only down to 10% of max, the ruin remains)
Go deeper (Requires Fire Mana)
“The heat climbs even further as you venture deeper into the thick smoke. A sulphurous stench lingers in the air and pillars of fire cascade through the melting floor around you. The blaring inferno engulf you whole; fire burning through your clothes and caressing your bare skin. Your blood is boiling within you but you feel no pain. After all, this is your element, and when you resurface once more you feel born anew...” (Unit receives immunity to fire and the Fire I promotion, Ruin is removed)
Dispel the magic here (Requires Metamagic Mana)
“It puts up a struggle, but your prowess soon puts an end to the twisted magic protecting the ruin. Soon the walls crumble and the fire die down. As the thick smoke clears you find the cause of the terrible heat: a source of Fire Mana is concealed deep within the now cold and dark ruin.” (Ruin is destroyed and replaced by a Fire Mana)

Trial in Fire
“The warmth quickly becomes unbearable as you descend deeper and deeper into the ruins. The air vibrates with heat and you can barely see through the smoke around you. Your eyes, your throat, your tongue - they grow dry and sore, shrivelling up within you. Hopelessly lost in the thick smoke, there seems to be no escape from this fiery death trap.”
Try to flee(No requirement)
(50% Chance) “You stumble through the smoke with your shrivelling hands clawing upon the burning walls. Your feet shuffle aimlessly over the floor that seems to almost boil underneath you. Soon the burning inferno closes its fiery embrace around you, leaving your struggles all for naught.” (Unit is lost, ruin remains)
(50% chance) “Although you are struggling, you find your way back through the thick smoke and the roaring fires around you. When you finally reach the surface your clothes are charred, tufts of your hair missing, and your skin covered in burns.” (Unit suffers critical damage but only down to 10% of max, the ruin remains)
Go deeper (Requires Fire Mana)
“The heat climbs even further as you venture deeper into the thick smoke. A sulphurous stench lingers in the air and pillars of fire cascade through the melting floor around you. The blaring inferno engulf you whole; fire burning through your clothes and caressing your bare skin. Your blood is boiling within you but you feel no pain. After all, this is your element, and when you resurface once more you feel born anew...” (Unit receives immunity to fire and the Fire I promotion, Ruin is removed)
Dispel the magic here (Requires Metamagic Mana)
“It puts up a struggle, but your prowess soon puts an end to the twisted magic protecting the ruin. Soon the walls crumble and the fire die down. As the thick smoke clears you find the cause of the terrible heat: a source of Fire Mana is concealed deep within the now cold and dark ruin.” (Ruin is destroyed and replaced by a Fire Mana)