Alright, here goes.
In the magic system of Mordheim we have several spells, who can enhance the caster or weapon, or summon something for the caster. I have collected most of these, and written them down shortly here:
Clubba: +2S, 1A, disappears when he suffers a wound summoned club
Sword of Rezhebel: +1A, +2S, +2WS, leadership test summoned sword
Silver Arrows of Arha: D6+2 arrows, S3, 24, casters BS summoned arrows
Gnawdoom: 2D6 S1 hits, 8 summoned rats
Black Fury: May charge 12, +2A, +1S this round enhances caster
Tincis Rage: Cast on friendly warrior within 6, +1S & Frenzy, disappears when caster gets K.O. or stunned or when he fails a leadership test, at the beginning of his turn enhances warrior/caster
Black Blade of Khaine: Cast on weapon within 6, +2S to a weapon & ignores AS enhances weapon
In my opinion, these can all assist giving a critical hit, except for Gnawdoom (which should work like Fires of U'Zuhl for instance, or any other summon weird thing spell - only reason I took this in, is that you don't summon a magic ball, you summon real live creatures, who can usually do unarmed crits), since you can only crit in hand-to-hand or shooting.
This should also ask the question: Can the Silver Arrows of Arha crit? They need to be able to hit, because they're dependant on BS, indicating that they belong in the shooting category and thus should be able to crit as other arrows/bolts/etc.
Besides these and the question about critting, we have this nasty one, which no one can figure out:
The Hammer of Sigmar: +2S, double wounds, difficulty roll in shooting phase or leadership test? summoned hammer, enhances caster or enhances weapon?
To understand this spell, we should probably have the description up and analyze it:
"The Hammer of Sigmar Difficulty 7This weapon of the faithful glows with a golden light, imbued as it is with the righteous power of
The wielder gains +2 Strength in hand-to-hand combat and all hits he inflicts cause double
damage (eg, 2 wounds instead of 1). The Priest must test each shooting phase he wants to use
First of all it says "This weapon", meaning it should either be a summoned or enhanced weapon, which should rule out, that it enhances the caster.
Then we have the sentence: "[...] he wants to use the Hammer", which should refer to the spell name and not an actual hammer, but could refer to both, if "The Hammer of Sigmar" is a magical weapon and known by name, and thus should be written with a H.
The "Hammer" could also refer to the extra punch Sigmar gives the weapon, when his servant is using one.
Unfortunatly I cannot get any further here, and thus I need your assistance:
A. The Hammer of Sigmar - a hammer summoned magically, hitting with an extra +2S and causing double wounds, and if this is so, is it 1-, or 2-handed?
B. Sigmar who enhances his Warrior Priest's weapon with the power of Sigmar, giving it that extra punch to smash his foes?
Also, as an additional comment, it says "The Priest must test each shooting phase he wants to use
the Hammer", which should mean, that once you've cast it, you can choose when to use it, and you don't have to test each phase if you don't want to.
This could support answer B, since a summoned weapon usually requires to be maintained each turn (see Sword of Rezhebel) - not when you want to use it.
It could also support answer A, saying that this requires some magical powers to use.
This sentence might also mean, that this spell will remain in play the entire game, and you just need to test whether you can use it or not, that specific round.
Alright, that was the hard part, now to the spell testing. How must we test to maintain this spell?
First of all, there is two spells, I've mentioned, which requires a leadership test to maintain - Sword of Rezhebel and Tinci's Rage. Both of these tests are done at the beginning of the turn.
Second of all, there is no other spell (that I know of), requiring a difficulty test, however, this would seem more logical, since it is in the shooting phase (and thus magic phase), and also what another thread concluded The Hammer of Sigmar
, partly because it says so in the german version of the Mordheim Rulebook. Remember, that this should not count as casting a spell.
Hope you can help me answer the A or B dilemma and confirm that the above mentioned spells can crit, and that The Hammer of Sigmar must be tested with a difficulty roll.
Phew. Sorry for the long post!