If you've an almost untouchable SC and a battlefield damaging enchantment cast (even through item) - it can be useful to give him the sandals of the crone (correct name?) which spam blink so your SC goes around making a little harder for the enemy hordes to swarm him while they get damaged.
In my experience that only means him always running around to get to the enemy troops and racking up more fatigue while doing so. If it's a SC, it doesn't need to blink, it needs to hit stuff.
Unless it is an SC that is relying on a battlefield enchantment, like he said. In which case surviving is the name of the game.