Anyway, welcome to the forum, and enjoy your stay
He comes down fast and delivers a strong value turn after turn

Lost in the Spirit World The Spirit Oasis Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0017_MTGTLA_JSTheme: Underwater Jumpstart Theme Card Flying Dolphin-Fish Invasion Submersible Rowdy Snowballers Turtle-Seals Tui and La, Moon and Ocean Giant Koi Serpent of the Pass Unagi's Spray Octopus Form Honest Work Coastal Piracy White Lotus Hideout Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0010_MTGTLA_JSTheme: Adaptive Jumpstart Theme Card Glider Kids Kyoshi Battle Fan Rowdy Snowballers Katara, Bending Prodigy Princess Yue The Blue Spirit Teo, Spirited Glider Giant Koi Boomerang Basics Frantic Search Lost in the Spirit World Waterbending Lesson Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0018_MTGTLA_JSTheme: Wise Jumpstart Theme Card Gran-Gran Forecasting Fortune Teller Otter-Penguin Katara, Bending Prodigy Rowdy Snowballers Messenger Hawk Turtle-Seals Consider Waterbender's Restoration Waterbending Lesson Coastal Piracy Whirlwind Technique Thriving Isle 6 Island [QMIWFqwRUK1NLBxjbbXXL] Island Appa [5qtAqNeW80BB7BCgfUsB1S] 0018_MTGTLA_JSTheme: Wise Jumpstart Theme Card Tiger-Seal Otter-Penguin Knowledge Seeker Sokka, Lateral Strategist Rowdy Snowballers Messenger Hawk Turtle-Seals The Blue Spirit Consider It'll Quench Ya

Having a stable mana base is essential if you want to do multicoloured strategies, and the only way that works is with fetch lands
It isnt always that easy, though - there are definitely some cards in the metagame that cause this archetype issue, like Amazing Rare Yveltal [Shining Fates]