This recent round of previews showed off some versions of Tifa, Kain from Final Fantasy IV, Squall, Rinoa, and Angelo from VIII, Zidane (with one version being an alternate for competitive powerhouse Ragavan), and Vivi, and even a couple of versions of Firion from the divisive second entry
MTG boomers out there remember terms like bury and remove from play, or what we now call destroy and exile
Artifact tokens, like Treasure, Clue, and Food are considered artifacts in play, and the affinity mechanic doesnt distinguish between token and nontoken artifacts
At the time of MH3s release, Deserted Temple was played in 17,161 decks
So, there are limits, hence probably why it was printed in a Standard-legal set
That is, Kaito's triggered ability is not additive