Either way, if youre playing any amount of level 6 monsters in your deck, this card is an absolute must-have for your extra deck
Since this card prevents your own monsters from attacking as well, you can either use this to stall until youve finished building up your field, or use it in a stall deck like Final Countdown
C Common Red-Eyes Fusion X SPELL Fusion Summon 1 Fusion Monster that lists a "Red-Eyes" monster as material from your Extra Deck, using monsters from your hand, Deck, or field as Fusion Material, and if you do, its name becomes "Red-Eyes Black Dragon"
This makes for thrilling comebacks, but it becomes hard to take seriously if this is done to death
This is fantastic due to its simple Effect that has no cost