You might want to cap at 3 instead of 4. Being able to pick a supernatural, strength, toughness, Speed, essentially at will, may be too high to allow a cost of only 1 for the ability.
Giving glamours for invisibility, without limiting it in some way is giving the user far more than invisibility.
Pick either spirit of Gaeous form, based on which seems more appropriate(probably spirit, but I haven't read the entries or know the fiction off which the ability is based)
I would be very hesitant to offer sponsored magic in any form, even a very limited version.
Need to put a catch on the healing and toughness abilities.
For dog, I would go with living dead over either wizard con or Phys imm.
For monkey, it's tricky. Giving them a second set of modular abilities both requires a lot of tracking and also really stretches the reach of this power. It is also currently a 8 cost power as written. I think multiple beast forms might be enough.
Tiger, I don't know about limiting skills. That will hamstring the character. In a low power game they can survive a few sessions without the powers, though you might want give them the equivalent refresh, indicating an increase in free will for the PC half and a decrease in free will for the NPC half. In a high power game, where players are spending 8 refresh or more on powers, losing access to powers is brutal.