Might be just an example of a wider thing. The AI didn't use Agent of Shauku to pump an unblocked creature for lethal damage.

The AI attacked me with a swarm of creatures multiple times and had Agent of Shauku on board. It used his pump ability on blocked creatures, which is fine enough. But it could kill me three turns in a row if it just pumped an unblocked creature, and it never did!

Not sure why this is possible, as the pump happens after blockers and the AI could probably do the math and figure out I'm dead and at least attempt it. That's a big part of what the card is for.

Sample decklist:

.239 25 Swamp
.4792 3 Agent of Shauku
.4803 3 Bog Glider
.4410 3 Cateran Kidnappers
.7557 3 Shuko
.10530 3 Disfigure
.5895 3 Unhinge
.10669 2 Soul Stair Expedition
.14867 3 Coat with Venom
.14256 4 Disowned Ancestor
.4491 2 Highway Robber
.4536 3 Misshapen Fiend
.2827 3 Mercenary Knight