>>33838942>Chansey Seismic Toss vs. 0 HP Heatran: 100-100 (30.9 - 30.9%) -- guaranteed 4HKO after Leftovers recovery>252 SpA Heatran Magma Storm vs. 248 HP / 8 SpD Eviolite Chansey: 105-124 (14.9 - 17.6%) -- possible 5HKO after Stealth RockSo over the four turns, Chansey is taking:
18 + 12 = 30% total
6 + 12 = 48% total
18 + 18 + 12 = 96% total
And then Heatran can outspeed and kill the next turn, taking 90% damage in the process.
Having said that, this is only the calculation for Toxic Heatran. I can't see any other Heatran sets being able to take Chansey on.
I personally don't run Toxic Heatran so I'm wondering if it's only the one specific set that can handle stall or if there's something I'm missing here.