1. Change the name. Overlaps with current existing Fog Shield.
2. Make the upgraded version as well.
3. Is it totally useless if the mark isn't

or

?
4. When making Other cards, you need to be careful of the fact that a high cost Other card can be totally useless in most decks but overpowered in rainbows, or simply in a deck using immolation or nova. This card is a good example. Why in the world would you use this in a mono or duo deck when Dusk Shield (6

) has the same probability but lasts forever, and the REAL fog shield costs 1/4 as much and almost has the same probability (40%)?