These are a new experiment to test out and the usual Commander precons with tons of new cards arent going away
First, counterspells are great answers
In a game where you are putting down a lot of permanents, this makes it harder to do and leads to crowded spaces due to having your opponent spread out their cards to avoid Chaos Orb falling on them
If Rootcast Apprenticeship is copied, the effect that creates the copy will usually allow you to choose new targets, but you can't choose new modes
This ensures consistent draws and keeps gameplay balanced
For example, if you control this creature and Anointed Procession ("If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead."), each time you create tokens, you can choose to apply Anointed Procession's effect to double those tokens first, then apply this creature's effect to create an additional Thopter token