A combo can be any set of cards which effectively ends the game in your favor, be that a prison like Teferi + Knowledge Pool, infinite damage/mill, or even a very fast combat clock like Skithiryx, the Blight Dragon + Lightning Greaves
WOC34013 GTIN: 7 42818 34013 7 Made in the U.S.A
If its mana value is 4 or greater, seek a creature card
Against control the Viper is at its best where they have few cheap creatures to block it with, most of which have low power and high toughness thus being awful blockers facing down a deathtouch dork
This can be the background for Imoen, Mystic Trickster or in Commander, Legacy, Vintage, or Pauper deck with many dungeons to get through
Memorial Vault Heres another one that doesnt excite me personally, but Im not going to pretend like Memorial Vault doesnt represent some crazy card advantage