As with many of the cards in this list it does cost you and in this case it is card advantage but we return to the simple point that you could have any number of cards, if they are all land or all spells you are not going to be doing much
They appear about 25% of the time in the final card slot, and all rarities are represented, from common all the way up to mythic rare
People have already asked if were going to ban this, to which I say Its no Karakas. Making someones team into 1/1s is great if you want to wipe them out with a small Black Suns Zenith or Earthquake, or unmorphing Bane of the Living for one
Klingon Fury is just about attacking swiftly and disabling Enchantments/Artifacts
A 4/4 Dragon with flying for four mana, upon entering the battlefield, Bolas causes each opponent to discard a card
Im not feeling the $28 price tag, but at least the art is nice