Because most of the Karakuri main deck monsters only switch to defense if they are targeted for an attack in face-up attack position
UR Ultra Rare El Shaddoll Construct X LIGHT Level 8 [ FairyFusionEffect ] ATK 2800 DEF 2500 1 "Shaddoll" monster + 1 LIGHT monster Must first be Fusion Summoned
This Spellcaster's Command Structure Deck contains
The contrast between Jaden and Aster's personal senses of heroism further strengthens the duel, with one happy-go-lucky, the other overly serious, and both convinced they're fighting for the right cause
9 Inspector Boarder This card is an excellent floodgate to prevent your opponent from using Monster effects, but how does it actually work
Junk Destroyer X EARTH Level 8 [ Warrior / SynchroEffect ] ATK 2600 DEF 2500 "Junk Synchron" + 1 or more non-Tuner monsters When this card is Synchro Summoned: You can target cards on the field, up to the number of non-Tuner monsters used for the Synchro Summon of this card