While I whole-heartedly agree Chi-Yu needs to go, I feel Dracovish is a bit of an extreme comparison.
- Hazards can wear it out over time (non hdb)
- Priority moves / outspeeding combined with its pitiful bulk can kill it
- BAXCALIBUR
- Checks previously mentioned (ttar, dondozo)
Thermal Exchange Baxcalibur can bait a Fire-type move, switch in, get the +1 atk, and then kill.
DEFENSIVE CALCS:
252+ SpA Choice Specs Chi-Yu Overheat vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 99-117 (44.5 - 52.7%) -- 21.1% chance to 2HKO
252+ SpA Choice Specs Chi-Yu Dark Pulse vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 60-72 (27 - 32.4%) -- guaranteed 4HKO
252+ SpA Choice Specs Chi-Yu Psychic vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 45-54 (20.2 - 24.3%) -- guaranteed 5HKO
252+ SpA Choice Specs Chi-Yu Fire Blast vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 84-99 (37.8 - 44.5%) -- guaranteed 3HKO
252+ SpA Choice Specs Chi-Yu Flamethrower vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 67-81 (30.1 - 36.4%) -- 51.5% chance to 3HKO
252+ SpA Choice Specs Fire Tera Type Chi-Yu Overheat vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin: 132-156 (59.4 - 70.2%) -- guaranteed 2HKO
252+ SpA Choice Specs Fire Tera Type Chi-Yu Overheat vs. 252 HP / 0 SpD Baxcalibur affected by Beads of Ruin in Sun: 198-234 (89.1 - 105.4%) -- 37.5% chance to OHKO (!!)
OFFENSIVE CALCS:
+1 252+ Atk Choice Band Baxcalibur Glaive Rush vs. 0 HP / 0 Def Fire Tera Type Chi-Yu: 328-387 (252.3 - 297.6%) -- guaranteed OHKO
+1 252+ Atk Choice Band Baxcalibur Earthquake vs. 0 HP / 0 Def Fire Tera Type Chi-Yu: 272-322 (209.2 - 247.6%) -- guaranteed OHKO
+1 252+ Atk Choice Band Baxcalibur Iron Head vs. 0 HP / 0 Def Fire Tera Type Chi-Yu: 73-86 (56.1 - 66.1%) -- guaranteed 2HKO
+1 252+ Atk Choice Band Baxcalibur Icicle Crash vs. 0 HP / 0 Def Fire Tera Type Chi-Yu: 116-137 (89.2 - 105.3%) -- 31.3% chance to OHKO
+1 252+ Atk Choice Band Baxcalibur Ice Shard vs. 0 HP / 0 Def Fire Tera Type Chi-Yu: 54-65 (41.5 - 50%) -- 0.4% chance to 2HKO
Please tell me if I'm wrong on any of this, I am still a relatively new player.