AI puts counters on creature dying to Fading.

[cskau]

Describe the bug
The AI in my current match has just played a 'Lead By Example', right before their turn, to put two +1/+1 counters on their only creature on board, which was (predictably) dying to Fading during their Upkeep.

To Reproduce

1. AI played 'Skyshroud Ridgeback', which has Fading 2.
2. Two turns go by wherein the AI played no other creatures.
3. At the end of my turn/beginning of theirs, the AI played 'Lead By Example' to put two +1/+1 counters on its 'Skyshroud Ridgeback', just before the Fading effect triggers during Upkeep.
4. Their creature gets immediately destroyed by the effect of Fading as the last Fading counter is removed.

Expected behavior
As there was absolutely no reason for the AI to spend both mana and an instant to pump their creature in the split second before it died, I would expect them to simply not play that card.

It seems the AI needs some additional logic to check for whether Fading is about to destroy a creature, before targeting it with an instant like that.

I do not believe there is any reason for the AI to want to spend the mana, get the instant out of their hand, nor put the creature in their graveyard. It really does just seem like the AI didn't realise the creature was dying.

Desktop (please complete the following information):

• Linux
• Forge 1.6.65