Goblin support from LEDE includes Goblin Biker Grialle Trio which lets goblins attack directly. OTK Set-up: Rank-3 (Tour Guide, Terrortop, etc.) + Grand Entrance/Grand Bash
1. Xyz into Goblin Biker Big-Head Gabonga and search Goblin Biker Dug the Assaulter. Use Dugg to to detach from Gabonga and search either Goblin Biker Grand Entrance or Grand Meeting of the Goblin Bikers (whichever you're missing).
2. Xyz Gabonga into Xyz Armor Fortress. Detach Gabonga to search Armored Xyz. Activate Goblin Biker Grand Entrance to search Goblin Biker Clutter the Noisy and use secondary effect to detach 1 material from Armor Fortress to special summon Clutter and activate Clutter to special summon Gabonga from GY.
3. Xyz Dugg and Clutter into Goblin Biker Grialle Trio. Xyz Armor Fortress into Full Armored Dark Knight Lancer. Activate Grialle's effect to detach Armor Fortress from Dark Knight Lancer and set it in Defense Position. Activate Gabonga's effect to attach Dark Knight Lancer to Gabonga.
4. Activate Armored Xyz and equip Grialle with Armor Fortress. Activate Grand Bash. Gabonga will have 1 material (Dark Knight Lancer) and Grialle will have 2 material (Dugg and Clutter), so Gabonga and Grialle can attack directly (must have 3 Xyz materials on field). 2700 (Gabonga) + 3100 (Grialle equipped Armor Fortress) + 2300 (Grialle second attack from Armored Xyz) = 8100.
The combo is easily interrupted but we have extenders like the level 3 psychics and Instant Fusion (thrust target). Thrust can also search for Grand Entrance and other board breaker one-ofs like Feather Duster, DRNM. The entire combo can be played under D-Fissure since Xyz material go to GY, so it serves as a pseudo-crossout for Droll/Veiler and is good against fire decks.