Generally speaking, in decks that are three or more colors, you want to play almost all dual lands, along with enough basic lands to support whatever ramp is in your deck (Land Tax, Kodama's Reach, Rampant Growth, et al.)
Yes, please take back your game winning card, friend Midnight Pathlighter This evasion ability is really, really weird but I like it
This is a great opportunity to get in on Windswept Heath once copies from the clash packs saturate the market, since Im guessing that many players are going to want to pick this clash pack up for the value
Slightly similar to the Topsun card above, the rarest cards had a prism holofoil background
No paywall
Arcades' card draw effect ensures you never run out of gas, and it's surprising how many walls become excellent utility creatures once you're able to actually beat down with them