If the Chiefs are encountering an element of the unknown when they visit the Jaguares on Sunday morning, the home side won't be alone in offering a little mystery.
While the six changes Dave Rennie made for an historic first Super Rugby match in Argentina added plenty of experience to his side, they also suggested a Chiefs team who might be slightly altering their soul in the face of what will be a fierce challenge.
The Jaguares are one element of the overhauled competition that have drawn few complaints. Stacked with Argentinian internationals, the new side will be more than competitive on the park and offer an equally commendable atmosphere in the stands.
It's an environment few Chiefs will have entered but one where Rennie thinks his charges will encounter no surprises. Besides, the coach has sprung a few of his own when selecting his side.
While leaning on experience in what will be a pivotal front-row battle, handing Hika Elliot his first start of the season and recalling battle-hardened Japanese prop Hiroshi Yamashita, Rennie's other alterations provide a window into the coaches' thinking ahead of the match.