Remember the first half of the poem. There is a common nursery rhyme used to teach children the days in the months. The first line reminds you how many months contain 30 days. The first line goes, 30 days have September, April, June, and November.. You can remember, based off this line, that September, April, June, and November each have 30 days.
Overwolf is a software platform created by Overwolf Ltd. which allows developers to create extensions (called applications by Overwolf Ltd.) for video games, which are then offered to users through Overwolf's App Store.
The Sword of Summer (mentioned) The Hammer of Thor (mentioned) Ullr (often spelled Ull and Ullinn) is the Norse Aesir god of glory, hunting, and skiing and the son of Sif and step-son of Thor. Ullr was briefly mentioned in The Sword of Summer by Otis, saying Ullr invented snowshoes and archery. He presumably has the standard powers of a god.