Krosan Grip Split-second on top of enchantment or artifact removal can be critical for when a player has counter spells to protect their combo pieces
Rulings 2004-10-04 If an effect asks you to discard a card, you can't "discard" something that is in your graveyard
Witness is mostly used to secure some redundancy on thinly stretched decks with roughly one answer each for a variety of things or as part of a creature focused combo deck
Valkyrie Vierte X LIGHT Level 3 [ Fairy / Effect ] ATK 1400 DEF 1400 During your Main Phase: You can excavate the top cards of your Deck equal to the number of other "Valkyrie" monsters you control, and if you do, add 1 excavated Normal Spell/Trap to your hand, also send the remaining cards to the GY
(I think its reasonable to make an exception for top 8, though: at this point, theres a risk that some players have been on stream and others havent, and since players know who theyre going to play against, they could know who to watch or have their friends watch, and there could be an imbalance of information
