RD/KP07-JP020 Kisoutengai / Unbelievarmor
Normal Spell
{Requirement} Place 3 monsters (Level 7 or higher) with different Types from your Graveyard on the top or bottom of the Deck in any order.
{Effect} Choose 1 Normal Monster in your Graveyard and add it to your hand, then choose 1 face-up monster your opponent controls and it loses 1500 ATK until the end of this turn.

TL note: The armor’s name is kisoutengai (奇装天鎧), a pun on a expression read the same way (奇想天外, lit. “fantastic idea from beyond the heavens”) which means “fantastic/incredible”, but replacing the second and fourth kanji with “equip” and “armor” respectively, so that it reads “rare + equipment + divine + armor” for extra cool points.

Sources: 1, 2, 3.