You focus and create an illusion clone that can interact with the world. You can also perceive through its essence, touching what it touches, tasting what it tastes and so on. It has essentially low vitality, but can fool attackers similar to other magic.
This clone could also represent another creature of similar size.
You can also cast spells through it, potentially extending your line of sight around corners.
You concentrate; a perfect replica of yourself materializes, its form shimmering briefly before solidifying. Through its senses, you perceive anew. It moves ahead, casting spells, touching objects—extending your reach beyond sight.