SPELLS #1 (GLOG magic)

This is the first part on the "spellbook" section of my houserules. It's extremelly difficult for me to write those, but its something I been wanting to do since always. I had some ideas in mind but the magic system from the GLOG looked interesting. I adapted it freely: in short... 

Anybody who knows at least one spell, has one Mana Dice (MD). Magic Users know a spell at level 1, but any bonus on wisdom will also give one to any given character.

Magic Users represent, in-setting, people with latent gifts that has earned the right to bear a staff (this is taken from A Wizard of Earthsea and I liked the implications it had on the books, making the staff act as a badge of office for the casters). So, whenever they are holding their staves, MUs have an extra MD (in the original PDF, Goblin Punch makes this bonus come from the wizardly robes, but I preferred to put the focus on the staff instead)

Independently from this staff bonus, they get an extra MD at levels 3, 6 and 9.

S P E L L B O O K :

notes: 

references to turns are equally valid in combat, in dungeon or in overland travel. This means that spells will sometimes last during 4 hours and sometimes during 10 seconds with the same mana. This is intentional and I think it can work, I think it can represent how the caster behaves differently under stress than having time to make proper preparations, meditations and rituals.

I also dont use HP, with Hit Dice being the unit, and everybody getting a death save at 0 HD. Generally, MUs get one per level, while fighters get two. This has made me write carefully all the spells that do or heal damage.

BIRD: You become a bird of your choice (but always the same). You suffer double damage in this shape. This transformation lasts for [sum] turns. Every turn beyond that you must save vs paralyzation or become trapped in this shape.
Inventory slots equal to your bird-shape strength do transform with you, the rest falls or must be carried in your claws. Use this table as a guide:

Robin: AC as plate, STR 6, 24 miles per day
Crow: AC as chain, STR 8, 100 miles per day
Owl: AC as chain, STR 10, 50 miles per day. Good nightvision, bad dayvision.
Hawk: AC as leather. STR 12, 200 miles per day. Consumes 2x turns.

HEAL:  Whoever is being healed rolls as many d6 as the [sum]: For each 4+, he recovers 1 HD. If you invest 2 or more dice, you can divide two [sums] between healed allies and healed amount. A dead comrade can attempt a new death save after this, using the caster's save, but no more than once (no matter how many casters attempt it after that)

SHIELD: Duration: [sum] turns. Caster and whoever is near him gets AC = chain, + a chance to block all projectiles during this turn with a 5+ in 1d6. You can spend a MD to re-roll this dice once per turn.

LIGHT:  Duration: [sum+level] turns. The staff of the caster emits light enough to read. Investing 2 dice or more raises this intensity up to a car's lights, but consumes 3x turns. Without a staff, this spell doesnt light much beyond the caster's silhouette dimly. 

DISGUISE: Put an illusion over something to make it look like another thing. Both the real and the illusory objects or beings must have a trait in common: a characteristic color, a shape, a similar sound, etc. This lasts for [sum] rounds, though a result of 12 or more will make it "permanent". Still, all illusions will degrade over time by acting or being used in a way that doesn't suit the disguise.

FIRE: Invest 1 MD to lit something small and flammable, such as a pinecorn or a torch. The result is the turns it will take to uninterruptedly concentrate to do it (every 4+ counts as zero)
2 to lit something flammable, but bigger.
3 to create a wall of fire on a narrow stone corridor: it will remain as long as you concentrate, +1 turn for each caster level.
4 to create a ring of fire around you in the same way.

To make a fire attack, you must invest 3 or more MD: The highest one is ignored. The remainding results are divided in two [sums]: one of them is the mandatory number of targets (if there are enough targets in the area, you must harm them all, including yourself if you have fired at point blank. Ignore if there are not enough targets). The other number is the damage dealt to each of them in HD, with a save vs dragon breath meaning half damage, rounding down.

DIVINATION: This spell requires an oracle you carry with you (1 slot) and some time of rest. Every question you ask requires to invest one MD. The answers are always going to be single or composed NOUNS, never verbs or adjectives, nor yes or no; and the GM should be as specific as he can without breaking this restriction.
Every answer you reveive using this spell is then recorded on a vocabulary list that you forge little by little and that can contain a maximum of 6 words. Once you got all six, every question you make must be answered with one of that words or not being answered at all (whatever the GM thinks is more appropiate)
You could say its a spell that becomes less powerful as the mage does the opposite, and that is interesting. This is the reason for which some MUs need to find other MUs to contrast their readings, even if its less leveled up partners.

WINTER BLAST: Projects a cone of cold. You need to invest an initial MD to bring winter cold, but omit this step if you happen to be in a snowy or icy scenario. 
For an additional MD, everyone on the area must save VS paralyzation every turn or his MV becomes 10' for this turn. Every further failed save will also deal 2 HD damage to the target. Failing three times in a row will freeze the target straight away. They get bonuses to this save if they are prepared against the cold (by using heavy pelts, for example) or being far enough from the cryomancer.

Mantaining concentration on this spell requires the caster to invest a new MD each turn, or suffer 1 damage from congelation him/herself. As soon as you stop doing it, the cold reverts to "just cold".