Kazuki Takahashi was the original manga artist and creator of the Yu-Gi-Oh series, the man we have to thank for Yu-Gi-Oh itself
When his ink has dried on the next turn, he can take any action as normal
Effects that Fusion Summon first require the player to "use" appropriate monsters as Fusion Materials listed on a Fusion Monster by moving them from some location(s) to another, then after that Fusion Summon the Fusion Monster from the Extra Deck face-up to an unoccupied Main or Extra Monster Zone
Meanwhile, you should ideally be having Celebi EX on the Bench as well
In Modern, Dig Through Time and Treasure Cruise split the format, more or less, along the lines of Treasure Cruise appearing in aggro and tempo decks while Dig Through Time was preferred by control and combo decks, such as the following deck looking to find Scapeshift and seven land
Is it Nostalgia, Or Something Else Entirely