sky dragon yugioh card Slifer the This is of Ultra Rare rarity Sky Dragon (FMR) - Yugipedia

It appears only once in Modern Horizons 3 , but in a form you haven't seen before

Enchantment - Aura Fight Rigging Hideaway 5 (When this enchantment enters, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.) At the beginning of combat on your turn, put a +1/+1 counter on target creature you control

Then, there are some Counter Traps that are designed for countering very specific effects, like Rebound specifically countering an effect that returns a card from the Field to the Hand

While it's a spell, it can be countered

You discard first, so that could add stuff to the types in your graveyard

In a game all about collecting, the worst thing you can do is actually finish your collection