In Nightmare Troubadour , the effects of Blast with Chain are Kunai with Chain are swapped, meaning that each does the effect of the other
The winner, Yuuya Tamai, used a Fire / Water deck that featured Charmander and Charmeleon (but curiously, not Charizard)
As long as Constellar Belt is on your side of the field, your Light Monsters cannot have the activation of their effects negated
It's actually the smartest move from the folks in charge of Commander available to them, and they should be applauded for identifying an issue immediately and avoiding any heartbreak for fans of the card in the near future

OP07-078 Megaton Nine-Tails Rush OP07-079 Rob Lucci OP07-079 Rob Lucci OP07-080 Kaku OP07-081 Kalifa OP07-082 Captain John OP07-083 Gecko Moria OP07-084 Gismonda OP07-085 Stussy OP07-085 Stussy OP07-086 Spandam OP07-087 Baskerville OP07-088 Hattori OP07-089 Maha OP07-090 Morgans OP07-091 Monkey.D.Luffy OP07-092 Joseph OP07-093 Rob Lucci OP07-094 Shave OP07-095 Iron Body OP07-096 Tempest Kick OP07-097 Vegapunk OP07-097 Vegapunk OP07-098 Atlas OP07-099 Usopp OP07-100 Edison OP07-101 Shaka OP07-102 Jinbe OP07-103 Tony Tony.Chopper OP07-104 Nico Robin OP07-105 Pythagoras OP07-106 Fuza OP07-107 Franky OP07-107 Franky OP07-108 Vega Force 01 OP07-109 Monkey.D.Luffy OP07-109 Monkey.D.Luffy OP07-110 York OP07-111 Lilith OP07-111 Lilith OP07-112 Lucy OP07-113 Roronoa Zoro OP07-114 He Possesses the World's Most Brilliant Mind OP07-115 I Re-Quasar Helllp
Janbox will then manage all the shipping arrangements for you