If a spell or ability causes you to put cards into your hand without specifically using the word "draw," it's not a card drawn
BLUE Arcane Artisan I can see Arcane Artisan being decent in High CMC Creature decks like certain varieties of Jodah, Archmage Eternal and Braids, Conjurer Adept, basically letting you cheat into play your Void Winnower for just 3 mana
Dual lands are still great because they can produce two mana colors, and if your deck only runs two or three colors, then chances are itll be able to cast most of the cards in your hand
Playtesting is an integral part of the deckbuilding and optimization process see what works for you and dont be afraid to run with it if it works
Gyarados, unfortunately, is costly to use given that its main move requires four Energy, but they do discard your opponents Active Pokemons Energy which can be useful