At 72 DPI for web, its 180 px by 252 px
And the first one, the Priest of Yawgmoth , does something that's going to be infamously replicated by some of the most game-breaking Yawgmoth-related cards, which is cheating out chunks of mana by sacrificing something
Be prepared for a lot of rules interaction and different layers being affected by the different rules
Mulldrifter is rather like Think Twice in that it is not wonderfully efficient card draw but offers enough flexibility to offset this
If you're curious about the Ikoria Collector Booster Packs, here's what's inside: 1 Foil or Nonfoil from the Godzilla Monster series 1 Foil Showcase Card or Borderless Planeswalker 1 Foil Rare or Mythic This could also be a Foil Extended Art Rare or Mythic 1 Nonfoil Showcase Rare or Mythic 1 Nonfoil Extended Art Rare or Mythic 1 Nonfoil Ikoria Commander Card (from the related Commander Decks) 2 Nonfoil Showcase Common or Uncommon 2 Foil Uncommon 4 Foil Common or Land 1 Foil Basic Land 1 Foil Token That's not a bad mix of goodies
Each players turn has two phases - the Beginning Phase and the Main Phase - and must be completed in full before play passes to the next player