Pros : This card could be activated anytime after it was set on the prev. turn. Note that several deck such as gaia would be unable to use its effect ( or forced to) if you active the effect.
Cons :
-Also affect your monster.
-Only affect effect monster
-Switching attack means some card might actually get benefit from it.
Well, there's only 1 Plant Xyz deck in the game right now, Rikka
(and no, Sylvan doesn't really count because summoning an Xyz isn't the deck's main focus, their self mill effect is)
This armor appears in the artworks of the following cards:
"Dark Blade"
"Dark Blade the Dragon Knight"
"Dark Blade the Captain of the Evil World"
"Frontline Base"
"Centrifugal Field"
"Formation Union"
"Dark Contract with the Yamimakai"
https://yugioh.fandom.com/wiki/Card_Trivia:Metalsilver_Armor
Went and tested and you need to show a card of the same type to destroy the set card. It's funny how the text here, even though it's not the correct one, is easier to understand
Well this skill in theory allows you to fusion summon twice. You use dark contact, you fusion, you change it to forbidden dark contract, you fusion again. Good luck finding resources though.
This card could be great in the opening hand. After that it could help rebound after a wiped out board or just add 2 more monsters to thin the deck, if I’m understanding it correctly