This is my first attempt at a custom Skytear deck, so bear with me.
Playstyle: The theme of the deck centers around keeping up a steady stream of the assault keyword so that you are consistently hitting the portal and outsider. The added taulot cards provide flexibility and tons of guerilla effects to keep the minions to a minimum.
Opening Hand: It's a good idea to keep stormrunner, sakoshi, and any of the early play cards.
Early Plays: Cicada shadows, crane shadows, and bushido of the sakura are all good to start with to immediately start wittling down the portal. Canopy hunters and stalker pack are also good to take care of the minions quickly.
Mid-Game: You want to start building up for a massive hit to the outsider with assault after you get rid of the portal as quickly as possible. The idea is that you want to get allies on the board with the "fight: assault" with the scepter of kamru attached. Then, if you have stormrunner in hand, you can think about setting it up AFTER all your assault minions fight for a massive boost. Sakoshi works perfect for this.
Late-Game: Have your stormrunners follow all your assault keywords and ideally make them take on the outsider if you can. Let's say if sakoshi goes first with an attached scepter of kamnu: his special keyword will allow him to hit the portal for 1 (that's +1 atk/def for the storm runner), then the scepter allows another hit to the outsider (another +1 for your runner), then add in any other assault allies, PLUS your castle keyword. If you buffed the stormrunner with a naginata or dragon punch they will do an absurd amount of damage. Even if you can't match everything up, the steady stream of assault will wittle down the outsider pretty quickly. The destroyer attachment is also an amazing flat 5 damage to the outsider. I recommend attaching it to a weak ally that you don't mind losing (only play this card if you have enough castle points obviously).
Other Notes: I added Miyuki with the Hordecrusher for an alternative source of massive damage. She is also just a phenomenal flexibility card to pull an ally for free from discard. The scaruspex adds some mitigation. Death grasp, combustion, and steam tower add some flexibility. The remainder of the cards are meant to destroy minions via guerilla so you never or seldom have to waste time or damage engaging them.
