The phrase "opening spell" refers to a magic spell or ritual that is performed at the beginning of something, like an event or a ceremony, to set a positive tone or create a special atmosphere. Full definition
Look, the reality is that the club has been nose - diving since a fantastic opening spell. (sbnation.com)
Watford, unbeaten at home since a surprise loss against Swansea in the last game of 2017, did come into the game and soon put that early opening spell of ours behind them. (uptheclarets.com)
After a breakneck opening spell when Walcott had two chances to score - hitting the post with one, firing wide with another - Arsenal took the lead with Squillaci nodding in after Bendtner put a Jack Wilshere corner back into the six yard box. (arsenallatest.com)