Honestly, thats already a pretty good rate for what youre getting there, but theres more
Did the Ancient Brass Dragons friends all die and so it has to resurrect them so that it has someone to talk to
In the same way that you can't cast a spell if you can't get the proper mana, mana is also a limiting factor when it comes to deck building
One of the best ways to do this is by crewing a Vehicle, and Smuggler's Copter is the best choice of Vehicle for the job
We have other ways to add +1/+1 counters to our creatures: Shaile, Dean of Radiance adds counters while also easily triggering Breena, Orzhov Advokist gives everyone counters but they can't attack us, Guardian Scalelord puts a counter while acting as recursion, but I especially love Noble Heritage which acts like an even better Advokist if our commander is out
Trinisphere considers the total cost after applying all increases and reductions (from effects such as Thalias and Goblin Electromancers)