Gg every team copying them from now on
FNC first used it on June 26: https://www.vlr.gg/353160/fnatic-vs-team-vitality-champions-tour-2024-emea-stage-2-w2
SPG first used it on June 19 a week prior: https://www.vlr.gg/354504/fearx-vs-sin-prisa-gaming-wdg-challengers-league-2024-korea-split-2-w3
There's a reason for that, actually. When you're a tier 1 team, every game matters for you, and so you stick to what you know is the most sure-fire for you to win (i.e. the meta). When you're a tier 2 team, however, you get a bit more freedom to discover different ideas and try things out because you play so many matches in the year that any one loss doesn't have too big an impact in the long run. As a result, tier 2 teams are much, much more likely to try to innovate and go crazy than tier 1 teams