Blue jump with Garudan (no DLC)
Main winning condition is Wavecrash Colosuss aggressive, reduced to 4 Faeria. This means you have to reach an enemy well and place a lake there as fast as possible. Going opposite side is the better choice to accomplish this. If you run behind on the board, Battle Toads and especially Garudan can help get you back, but so will Ninja Toad.
For the starting hand, Prophet of Tides, Water Elemental and Aurora are best. Try to limit the use of humbling visions to big creatures only. Aurora's creation is the combo card, usable with Colosuss even after 3 reductions, with Aurora and Garudan for powerful plays, but also to clone Ninja Toad for the remaining damage. Emperor's Command is used to stay alive against burn decks or to deal with annoying structures.
Against certain match-ups you have to adapt, sometimes sending Prophet of Tides down the middle, sometimes playing a 7 cost Colossus to put pressure early on, etc. Triton Trainer is sometimes good to get a 5/5 Triton Warrior or a 4/3 Nina Toad, but can be replaced.
Hope you will enjoy the deck as much as I did. My personal best with it is #17, same day as this posting.