Also worth mentioning are Benevolent Blessing and Fungal Fortitude, both with flash , which allows us to protect our most valuable creatures such as our commander both quickly and efficiently
Other creatures you control will revert to their usual creature types unless another relevant effect is affecting them
Deathrite Shaman is a little slower and more vulnerable than Courser, he also loses his other utility and costs you some mana should you be using him for life
Thief of Existence is a good catch-all for any smaller problematic noncreature, nonland permanent out there, and comes with some good stats for the rate
You can definitely make more aggressive blue decks
Some smart plays include stopping a Basic Pokemon from reaching its strongest form, knocking out a vulnerable EX Pokemon for Prize Cards, or getting a Pokemon you need in the Active Spot while slowing down your opponent.