Sending someones hard-earned graveyard back to their library can be a back-breaking play against reanimator decks, Underworld Breach, or even Thassas Oracle, as your opponent will often have too many cards in their library to win the game after putting their graveyard back into their library
Descend into the world below the surface and discover the true potential of the Terastal phenomenon
A Darkrai EX | Mega Absol EX deck has garnered popularity early in the meta, and it actually includes Pichu and Oricorio in the mix (only one Darkrai EX, that too)
When an opponent draws except for their normal draw step, you get a 1/1 green Snake creature token
Yes, this means any deck with a big Spellcaster can make Red-Eyes Dark Dragoon , but with the free recovery of resources brought to the deck when summoning Skull Archfiend of Chaos via its effect, this deck can ensure the summon of Dragoon every single turn
Also, if youre debating playing two one-ofs with fairly similar effects or two of the same card, you should generally lean towards the split if people will not expect (and play into) the less popular card, and the better-positioned two-of if both cards are well-known or expected