[@olcharlieboi] so would your character be able to summon living things, objects and energy/attacks? or all/any/none of the above? What's the limit/range? Idealistically the possibilities are endless but for fairness of rp's sake and to stop possible bypassing of any puzzle it's probably best to put in more drawbacks for the more stuff he can do, or if you like the summoning aspect maybe he could conjur up only creatures, but they could have attributes? Then the struggle would be maintaining substance/control of them... And their strength being relative to your character's.