Kuoppakikka™ (Pit Trick) (PeTe(Cr)25?)
Range: Near
Duration: Sun/Inst
Target: Spec

This spell adds the effects of Pit of the Gaping Earth (PeTe15) and Seal the Earth (CrTe15). First it creates a pit of 6 paces across and 9 feet deep or modified from this (e.g. 3 paces and 18 feet), according to the caster's wishes. Target of the spell falls into the pit, taking +10 damage from falling. To avoid the pit, those in its vicinity must make a Quickness stress roll of 15+. In the next round, the pit is filled with dirt up to the surface. People targeted with this spell get only one chance to escape.

Lab total:
3 Int + 7 MT + 6 Pe (Cr 8) + 18 Te + 5 Aura = 39
39 - 25 = 14 => 2 seasons

Reynald of Whitehaven met his end with one variant (spontaneous) of this spell; the dirt was replaced with a rock exactly the same size, falling down on him and crushing him.

Dance of the Swords (MuTe15)
Range: Near/Sight
Duration: Mom
Target: Small

This spell imitates the ReHe15 spell, Dance of the Staves, but affects metal and stone weapons. Below is the description for Dance of the Staves.

Causes a pole, staff, haft, or any other long, thin, non-living wooden object to bend and lash about wildly for a few seconds and then stop suddenly, keeping its new, twisted shape. A whirling staff strikes its holder and does +4 Damage, with a possible bonus if the weapon at the head of the pole hits the person.

Lab total:
3 Int + 7 MT + 6 Mu + 17 Te + 5 Aura = 38
38 - 15 = 23 => 1 season

N.B. Below is a spell, which is even nicer. I think I'll invent it instead of this one.

Treacherous Sword (ReTe25)
Range: Near/Sight
Duration: Spec
Target: Small

This spell is based on Treacherous Spear (ReHe25), but instead of wooden weapons, it affects metal/stone weapons. Below is the description for the spell.

The drop of blood (focus) that may be used with this spell must be from a person who has betrayed his or her family. The spell animates a metal or stone weapon in someone else's hand, and makes that weapon attack its holder until the wielder is dead or the weapon destroyed. When the spell is cast, the weapon tries to break its wielder's hold (QUICKNESS + ENCUMBRANCE stress roll of 9+ to hang on). On subsequent rounds, the wielder hangs on by making Strength stress rolls of 6+, allowed once per round. If a roll to hold on ever botches, the wielder loses control of the weapon and is hit by it automatically (see below). While still in its wielder's grip, the weapon does not strike him or her, but does not strike on the wielder's behalf either. Once the weapon breaks free or is released, it attacks its wielder, using his Attack and Damage scores.

The former wielder may fight the rebellious weapon. The weapon uses its defense rating as its Defense total. It has a number of "Body levels" equal to its Space characteristic. One handed weapons have a +6 Soak and two handed weapons have a +10 Soak. All thrusting and missile weapons used against the controlled weapon suffer -6 on Attack Totals. The spell ends when the weapon loses all Body levels, or when an hour has passed, whichever comes first. Causing the weapon to lose its Body levels may not destroy it, depending on the quality of the weapon.

Lab total:
3 Int + 7 MT + 8 Re + 17 Te + 5 Aura = 40
40 - 25 = 15 => 2 seasons

Incantation of the Lightning (CrAu35)
Range: Near
Duration: Mom
Target: Spec
Aimed: -3

A lightning bolt shoots forth from youf outstretched hands in the direction you are pointing, doing +45 damage to a single target it hits. Those near the target must make Size stress rolls of 6+ to remain standing. The oak wand need not be magical, but must be from a tree struck three times by a lightning.

N.B. Bearnard has no chance of inventing this spell for some years... but one day I will have it.

Lab total:
3 Int + 7 MT + 8 Cr + 13 Au + 5 Aura (+ 3 (4) Similar spell) = 36 [39 (40)]
36 - 35 = 1 [4 (5)]

My lab totals are a bit too low for it yet. I'm not sure if Mighty Torrent of Water or Pilum of Fire count as 'similar spells', but ArM4 page 69 suggests that they might be...