The intricacies of game mechanics

The Wizard chooses a spell from the following list with the indicated chances, excluding those that cannot be cast or, in his opinion (the same as that of the Master Genie), are useless for any stack.
Haste: 15
Air Shield: 10
Slow: 10
Stone Skin: 15
Bloodlust: 5
Bless: 15
Heal: 10
Weakness: 4
The indicated chance values are not percentages, but indicators. Calculate the chance as follows: (spell indicator) / (sum of indicators of all possible spells to cast). For example, the chance of Haste with all spells available will be 15/84.
Casts with a spell power of 3 at the expert level.

Now, regarding the determination of the appropriateness of casting:
Elemental Protection, Anti-Magic, and Magic Mirror: only if the enemy has a hero, and he has a Spell Book.
Heal: only if the target has lost health.
Prayer: only if the target has not acted in this round yet (waiting does not count as an action).
Executioner: only if the enemy has creatures susceptible to the basic Executioner spell (including already dead ones) - this is a bug in the game, because the Master Genie's spell is cast at an advanced level (Wizards do not cast Executioner).
Shield and Fire Shield: only if the enemy has stacks that are not killed, blinded, petrified, paralyzed, and cannot shoot at the moment (blocked and similar shooters are also considered).
Air Shield: only if the enemy has stacks that are not killed, blinded, petrified, paralyzed, and can shoot at the moment (blocked and similar shooters are not considered).
Accuracy: only if the target stack can shoot at the moment (a blocked or similar shooter is not considered).
Bloodlust: only if the target stack cannot shoot at the moment (a blocked or similar shooter is also considered).
The remaining spells (including all spells cast on the enemy, for Wizards) are, in the opinion of the mage creatures, always worth casting if they have not yet been cast on the stack and can be cast on it at all.