X SPELL Equip (This card is always treated as an "Armored Xyz" card.) An Xyz Monster equipped with this card gains these effects
Tera Pokemon cant be hurt while on the Bench, which means you can build them up without fear of them being damaged though of course, this doesnt protect them from being moved to the Active Spot by cards such as Bosss Orders
In the modern era of the game, Greninja has often been built around damaging cards on the bench with attacks while also having some consistency bonus attached to them
So you can discard a HERO from your hand to have this card gain attack equal to the discarded monsters attack, making this guy practically unstoppable in battle
The most widely used card from Obscura is no doubt going to be Void Rend
Banish 1 Zombie monster from either GY, and if you do, Special Summon 2 "Haunted Tokens" (Zombie / DARK / ATK/DEF 0), whose Levels are the same as the banished monster