Mew EX is arguably one of the strongest EX cards in general and is a literal Jack of all trades thanks to its ability to fit in decks of any type
It works with graveyard decks, draw two decks, cantrips, and can be played alongside self-mill or reanimator
Cloud Key or Semblance Anvil: Both seem really good almost like a better Foundry Inspector I just like the fact that he is another creature on the other had he dies to more removal this is more in the swap section but it's also here because you could add them along side of Foundry Inspector
8 M Scizor EX Full Art $12.12 Anything But Weak Scizor often gets plenty of flak for being so weak against Fire
just look at, well, anything
The difference in many draft games is often mana management, so make sure you're using the right amount of lands for your deck (between 16 and 18), and consider including spells or mana dorks that will let you access more mana if you feel they are necessary