Once the end of a dungeon is reached, the card will offer a reward for completion, including the chance to draw additional cards, create token creatures or cast a card without paying its cost
I have been recently looking at the top cards in each color for card draw of all time for kitchen table play like Commander, Five Color, Highlander, and Pauper/Peasant and all multiplayer formats too
You also need to make infinite mana, create an arbitrary number of Mirror Rooms/Fractured Realms, and have a loop loaded up with Isochron Scepter letting you play Molten Duplication as many times as you like
1st Edition Shadowless Base Set Venusaur Recently Sold for $25,000 [Source] Check current eBay listings here
electric SIR, from $47
Stocking up on these while theyre available can go a long way in helping you open more booster packs and make more wonder picks