Well, these cards would be terrible without the help of its supporting Spell/Traps
Wondering What Pokmon cards are worth money
Chandra Ablaze Chandra Nalaar Chandra's Defeat Chandra's Embercat Chandra's Firemaw Chandra's Flame Wave Chandra's Fury Chandra's Ignition Chandra's Incinerator Chandra's Magmutt Chandra's Outburst Chandra's Outrage Chandra's Phoenix Chandra's Pyreling Chandra's Pyrohelix Chandra's Regulator Chandra's Revolution Chandra's Spitfire Chandra's Triumph Chandra, Acolyte of Flame Chandra, Awakened Inferno Chandra, Bold Pyromancer Chandra, Dressed to Kill Chandra, Fire Artisan Chandra, Fire of Kaladesh Chandra, Flame's Catalyst Chandra, Flame's Fury Chandra, Flamecaller Chandra, Flameshaper Chandra, Heart of Fire Chandra, Hope's Beacon Chandra, Legacy of Fire Chandra, Novice Pyromancer Chandra, Pyrogenius Chandra, Pyromaster Chandra, Roaring Flame Chandra, Spark Hunter Chandra, Torch of Defiance Chandra, the Firebrand Oath of Chandra
An example of this would be the Sun & Moon Trainer Kit: Lycanroc & Alolan Raichu, containing a Lycanroc half deck, and an Alolan Raichu half deck
It may either increase the ATK and DEF by 30%, decrease them by 30%, or have no effect