>>17984984If its first attack is on the turn the blob uses trickroom, then it will win. It only loses to the blob if it has already used trickroom, and manages to connect both times with focus miss.
>>17985007Just going by usage stats on showdown. Here's the alternate version:
252+ Atk Tyranitar Crunch vs. 252 HP / 4 Def Reuniclus: 372-438 (87.7 - 103.3%) -- 18.8% chance to OHKO
252+ SpA Life Orb Reuniclus Focus Blast vs. 252 HP / 4 SpD Assault Vest Tyranitar in Sand: 322-385 (79.7 - 95.2%) -- guaranteed 2HKO