Yeah Parson made the tactic, likely in the battle sims with Jack. They didn't come up with it on the spot, and they already knew about it. So it was canned. One of Jillians warlords or perhaps Jillian might have come up with a similar tactic.
"They" didn't already know about it. Ansom had to have it explained to him. Wanda appeared to know the basics, but Jack had to suggest to her they needed a displacement on top of what they were already thinking. How can a tactic that not every warlord in the same hex/side knows, that your own side came up with, that has to be modified on the spot, be considered a canned tactic?
Maybe we're quibbling over semantics. What defines a canned tactic? I think it's a tactic used over and over again by the same unit, even in different situations. Where it becomes routine for that unit. Example: "Look, Jillian Sue is using her units as a meat shield again. Such a canned tactic!" What do you consider a canned tactic?
Panel 8 units of Jillian are attacking the infantry protecting Ansom. In the attack on Ossomer archons attacked the units protecting Ossomer. In both cases the units were presumably neutralized. Jillian had to let her mount take damage, soo... what is the big differance? And I can describe Wanda's attack as "sucker punching it so it could be scrapped of the ground."
The difference is that Jillian Sue could just barge in and take what she wanted, without having to pay the cost Wanda did. Even with Wanda throwing the sucker-punch.
Third to last panel: Jillian is flanked by two riderless megaglowiffs. In just about every case we've seen were we could actually make out that kind of detail the megaglowiffs, have had riders.
There's a dot/figure over every Mego-Gwiff in that panel. In about the same detail for the focus available in the last panel. Even the crying Mego-Gwiff has something on it. Might be a disabled/croaked/or perfectly healthy warlord, but there's something on it, like all the others in the panel.