From the creator of ElkoyTCG 20,000+ custom Commander decks sold
If a creature has more than one instance of riot for whatever reason, you can choose a different option for each instance
The ability to both draw a card when your stuff is targeted (and before resolution, so you can draw a card to respond to it) and to keep your foes from drawing more than one is very powerful for a 4/4 3-drop that gives you ramp, removal, and countering
I did not hear one negative comment about the trip
So, Celebi ex would only need one energy card to attack, and with just two energy cards, it could potentially deal with 200 damage
While most double strike creatures rely on a pump spell in order to devastate the opponent, Drizzt rewards you simply for playing bigger threats