send 1 Machine monster from your Deck to the GY, whose ATK equals its own DEF, with a lower Level than that targeted monster, and if you do, the targeted monster gains ATK/DEF equal to the Level of the monster sent to the GY x 100
Release the cards necessary to summon them Sorry for the negative review.
Tribute it, and if you do, Special Summon 1 "Fossil" Fusion Monster from your Extra Deck, whose original Level is 2 higher than that monster's
As for battle protection, Threatening Roar and Waboku work well in a Number 88 deck, since they can be activated (and removed from the field) even if your opponent decides to skip their Battle Phase
They are a must-have for any duelists with a deck focusing on Fusion monsters, Dragons, or, in fact, any who simply want nearly-assured victory.