Is it possible for a Maokai to become completely invulnerable with a fully stacked Leviathan while he's inside of his ultimate? The Leviathan blocks 15% of all damage, and the Ultimate blocks 20%. This is a whopping 35% and then there's all of his Armor and Magic Resist. With about 185 Armor and MR you get 65% then the Leviathan and Ultimate you get another 35% making it 100%... On top of masteries, such as the mastery that reduces the damage you take by a flat 3 (trust me, it really helps)..
If this happens, would the only way to damage Maokai be to use Armor and Magic Resist reducing methods and Penetration as well as True damage?