"Dream Mirror" is an archetype of LIGHT and DARK Fairy/Warrior monsters introduced in Rising Rampage as a TCG Exclusive.
In Ovid's Metamorphoses, Ikelos (called Phobetor by the gods) and Morpheus are somnia, children of the personification of sleep Somnus. Ikelos appeared in the dreams of mortals in the form of a beast, while Morpheus appeared in the form of a human.
In Germanic folklore, a Mara (also spelled "mare") is a malicious creature known for riding on people's chests as they sleep, bringing bad dreams (or nightmares). Likewise, sprites, often grouped with other diminutive creatures such as fairies, pixies, and elves, are often seen as benevolent creatures.
"Dream Mirror" utilizes a duo of Field Spell Cards, "Dream Mirror of Joy" and "Dream Mirror of Terror", in order to switch between the LIGHT Attribute versions of "Ikelos" and "Morpheus" that focus on defensive tactics and the DARK Attribute "Ikelos" and "Morpheus" who are more offensive-based.