how to get special guest cards mtg SOS Guests : r/MagicArena SPG] Main Set Special Guests

I love Junior loads here, but he seems a bit underplayed compared to Seafloor Oracle above, since they both play into the same space

Formats Not Legalstandard Not Legalfuture Legalhistoric Legaltimeless Legalgladiator Not Legalpioneer Legalmodern Legallegacy Not Legalpauper Legalvintage Not Legalpenny Legalcommander Legaloathbreaker Not Legalstandardbrawl Legalbrawl Not Legalalchemy Not Legalpaupercommander Legalduel Not Legaloldschool Not Legalpremodern Not Legalpredh Legaltlr

Why does it loot on blocks too

This could be either because they're new additions to Magic or because they're being reintroduced to the game for the first time in a while