While its possible to get tricksy with this card and protect yourself from game-winning sorceries or permanent-based combos, the floor of Serras Emissary will always be choosing creature. This effectively makes your board unblockable, and lets you attack with impunity by giving yourself protection from creatures, too
She also will trigger her own Distant Shores ability if she quests while at a location, keeping your hand full of cards while getting closer and closer to winning the game
You never want to include cards that you'll be sad to draw on turn five
Repeat step 3 and 4 until you have 1,000,000 1/4s or 2/1 fliers, all of which have haste
At the same time, the deep strategic elements of the Pokmon TCG are still present, such as choosing which attack your Pokmon will use and deciding the right timing for using Trainer cards