“Summer 2013” experimental season. Online ranked games (reports, discussions).

06/13/2013 Ominous1 (red, Castle, Rion, Caitlin) def Oldboy (blue, Stronghold, Tyraxor, Zydar) Skirmish, 137.

Correct. Oldboy's Zydar already leveled up Expert Earth magic early in the second round, but it turned out that none of my three spawn points had Slow.
At the end of the second round, he carelessly went with almost no magic onto the opponent's territory, where he was met and pushed back by the already strong Caitlin.
In despair, he built a 4th tower in the expansion, hoping for combat spells - Berserk and Executioner. Then came the agony.