It is one of the cards which holds no significance to me because of its art, but strictly because of the incredibly cool ability and playstyle
Players can simply insert Mew ex into their decks and deploy it if coming up against a Mewtwo ex, removing its previously straightforward means of victory and, at the very least, allowing for a more dynamic match
Budget Cards To Upgrade Deep Clue Sea With While Deep Clue Sea is both playable and very strong out of the box, it can still be upgraded with other cards to make the strategy more consistent
You can siphon all your energy from other cards into the Marvel, but you want to surround it with permanents that naturally go to the graveyard
Some good ones I found on a cursory search are Crash Through if you really need Balduvian's draw, or Brute Strength, Built to Smash, Invigorated Rampage, Ride Down, Run Amok, Rush of Adrenaline and Temur Battle Rage are all fairly inexpensive (both in terms of CMC and market price on the cards) spells that will give your creatures a boost, destroy blocking creatures (with regard to Ride Down), and give trample
cards, the value of Needle Worm Quarter Century Secret Rare depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Quarter Century Stampede)