What is the highest "Resist All" you can get on an at-will basis?
Yes, I killed your BBEG with his own lair:
Setting: Tomb with a perilous bridge and cliff 100 feet above a lava pit. Mummy pops out of his sarcophagus, initiative: Felix, Half-Elf Artificer: Twin Strike with crossbow. Trump (ala Donald), Eladrin Warlord: Charges mummy with Opening Shove, pushing off the cliff. Mummy fails saving throw, and falls into pit. Sanshiro (ala Japanese "superhero" Segata), Minotaur Barbarian: Strength check to lift sarcophagus and carry to cliff. Free action, drop sarcophagus into square above mummy. Sarcophagus drops on mummy, shoving him further down into lava. Mummy: proceeds to make a series of horrible athletics checks to swim and climb cliff. Dies a horrible death with lava permeating every orifice. Entire Party: Watches on in delight, faces alit with the glow of lava and flaming undead.
I soap myself up, and turn up the hot water in the shower, so my sweat mixes with the soap, slickening my skin: +5 to grapple I use my own legs as a shield since only upper-body hits matter: +5 defense I use my teammates bodies to construct a vehicle for myself, and dual-wield their weapons because as long as I win, we all win: +10 attack, +10 defense I completely ignore the enemy, their attacks, the devastating damage they are dealing to me and my team, and strike directly for their base, completely obliterating them, their way of life, and any chance they had at survival as a species: WIN Ender: The Original CharOpper and Power Gamer.