Azelf @ Electrium Z
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Dazzling Gleam
- Psyshock
- Thunder
Neither standard nor conventional by any means, but Z-Thunder Azelf definitely has the means to
check CroCune.
252 SpA Azelf Gigavolt Havoc (185 BP) vs. 252 HP / 0 SpD Suicune: 348-410 (86.1 - 101.4%) -- 87.5% chance to OHKO after Stealth Rock and Leftovers recovery
Assuming your opponent doesn't survive and misclick rest this turn, the odds are in your favor to remove Cune from play completely
But what's stopping Cune from just clicking CM while you swap to Azelf? You aren't gonna get it in on a double every time, are you?
A fair assessment, however
+2 252 SpA Azelf Gigavolt Havoc (185 BP) vs. +1 252 HP / 0 SpD Suicune: 464-546 (114.8 - 135.1%) -- guaranteed OHKO after Leftovers recovery
+1 0 SpA Suicune Scald vs. 0 HP / 4 SpD Azelf: 159-187 (54.6 - 64.2%) -- guaranteed 2HKO
Simply clicking Nasty Plot gives you the means to overcome that issue next turn while Cune is unable to take you out at +1.