Thought a lower level Fire monster Fire Spirit comes equipped with an effect that helps it to do increased damage against a weaker element. For starters, the Fire Spirit can be kept in the deck fore several levels without out being forced to switch it or evolve it because of its effect.
Fire Spirit[]
Fire Spirit born from a match fire. Don't you know that you can set whole forest on fire with a small spark?
Power[]
26/32
Type[]
Fire
Effect[]
Attribute Victorious Rout Inflicts additional 10 damage when victorious with better attribute.
Evolve to[]
Vengeful Spirit Armor, Incomplete Golem
Upgrade Cost[]
Lv1 Upgrade Gold 700 Rune 0 Lv2 Upgrade Gold 1400 Rune 0 Lv3 Upgrade Gold 2800 Rune 5
Evolve Cost[]
Lv1 Evolve Gold Rune Lv2 Evolve Gold Rune Lv3 Evolve Gold Rune