An embodiment of the invention includes a system for the guidance of a catheter to different regions of tissue (e.g., cardiac tissue) for therapy (e.g., ablation therapy). A plurality of electrodes, such as an array of electrodes, may be configured to perform various tasks. First, some electrodes may measure cardiac polarization. Second, some electrodes may function as magnets (e.g., electromagnets) that guide a separate ablation catheter towards the electromagnetic electrodes. These electromagnetic electrodes may be positioned adjacent tissue that is now recognized (possibly due to the electrodes that measure cardiac polarization) as being in need of ablation therapy. Thus, the electromagnetic electrodes may cooperate with an ablation catheter to render a system with magnetic guidance capabilities using intracardiac magnetic field generation. The system may control electromagnetic forces from the array of electrodes to guide the ablation catheter tip to the desired therapy location. Other embodiments are described herein.