mtg cards with warp Shadow in the | (Surge Foil) | Universes Beyond: Warhammer 40,000 | (40K) | Magic: The Gathering then puts all cards revealed this way that werent put onto the battlefield on the bottom of their library. TR&CI 190: How Does Warp

Kopala doesnt address the biggest issue for creature typal decks (that would be board wipes) but it makes it a heck of a lot harder to deal with your creatures in any other way

Since you create so many tokens, Champion of Lambholt will gain a ton of +1/+1 counters

Endless Atlas gives you constant card draw so long as you have three lands with the same name, War Room lets you pay one life to draw a card, and Minas Tirith draws a card so long as you attacked with at least two creatures

If youre looking to really add some power to your purchase, splashing in some new Discover cards from The Lost Caverns of Ixalan would certainly do the trick