As you ascend the splinterlands leagues, you will encounter more and more magic monsters. Coming up against severe damage, maxed-level magic monsters can be a pain as they will obliterate your lineup with a couple of hits. The Phase ability was one of the newer splinterlands abilities released when the new reward cards were released. Monsters with the Phase ability will have a chance to dodge magic damage. There are five monsters with the Phase ability, and I think Djinn Oshannus may be the most cost-effective Phase ability monster to purchase.