There exists a radical offshoot of the Elder Futhark runic alphabet called kig-anr (“stone-symbols”) that evolved into an ideographic form consisting of over fifty different characters. People who use kig-anr to perform magic get referred as “runescribes” who do so through two means with tools that need to have magical energy channelled into them during useage: inscribing runes onto a solid surface with a sharp metal stylus which requires a lot of time and steady hand or custom-made wands called vǫndr to quickly project runes onto tangible objects by pointing at them.
Once manifested, the kig-anr runes take instant effect, burning out after they activate unless they have a klik-kig (“stop-symbol”) following them. A klik-kig serves as a punctuation marker of sorts indicating the end of a runic chain while syphoning life-force from living organisms (plants, animals or microbes) within a one-hundred-meter radius which becomes converted into energy used to fuel the runes’ effects. If the klik-kig gets destroyed through physical means, the runes will cease functioning and become nothing more than simple carvings.
However, each rune has multiple meanings attached to them and I'm clueless as to how a runescribe would invoke a desired effect from their chosen runes without the stupid, impractical idea of calling them out loud (something that you'd expect to find in shitty Shonen animu).
How can such a problem get solved?