Of course, it also has pack tactics, which reads, Whenever Minion of the Mighty attacks, if you attacked with creatures with total power 6 or greater this combat, you may put a Dragon creature card from your hand onto the battlefield tapped and attacking. Nobody likes a surprise Dragon except the player taking advantage of it
Cast fear into the hearts of your opponents with a Black-Red deck thats ready to play right out of the box
When you pair it with cheap permanents that generate card advantages like Arcum's Astrolabe or Omen of the Sea, you can start drawing multiple cards a turn
When a card is both removal and a creature, its a pretty easy choice to include in a deck
Correction When Feolthanos is chosen by your opponent's Summon of cost 5 or less or an ability of their Character of cost 5 or less, cancel its effect
No, you can only delve a number of cards equal to the maximum amount of generic mana needed to cast a spell