Gandalf the White provides even more value for legends and artifacts with it second ability
didn't allow double sleeving cards
Timing is everything, and a sharp negate on your searchers could shake up your plans
R Rare Majestic Mirage X TRAP Continuous If a face-up card you control leaves the field by your card effect, or to activate the effect of your card, and the card that left the field was "Stardust Dragon" or a Synchro Monster that mentioned it: You can apply 1 of the following effects, but you cannot apply that same effect of "Majestic Mirage" again this turn
Laboratory Maniac replaces this state-based action with you winning the game instead
The spells and trap cards should cover for the weaknesses of your deck, and you should have a handful of each of the following: attack protection, effect negation, summon negation, spell/trap destruction