Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.

[Q]: The team with home-ice advantage hosts Games 1, 2, 5 and 7, while the opponent hosts Games 3, 4 and 6 (Games 5 7 are played "if necessary").
[A]: The home team takes games 1, 2, 5, and 7. The other team has games 3, 4, and 6. However, the last two games aren't always needed.

[Q]: Calvinism gained some popularity in Scandinavia, especially Sweden, but was rejected in favor of Lutheranism after the synod of Uppsala in 1593.
[A]: Reformed Christianity became popular in Scandinavia, especially in Sweden. But it was rejected in favor of Lutheranism after the synod of Uppsala in 1593.

[Q]: Captain Feathersword Captain Feathersword, "the friendly pirate", wears a hat, patch, and puffy shirt and wields a "feathery saber".
[A]:
Captain Feathersword wears a hat, patch, puffy shirt and wields a "feathery saber".