what makes a psa 10 pokemon card Should the difference between a

Animal Sanctuary doesnt produce colored mana, only colorless mana, and has an additional activated ability that can buff some of your creatures

While this demon can't go rogue as it were and just kill you itself a four mana do nothing card is pretty much the same as killing you

Our next spoiler is from of Wizards of the Coast's spoiler discussion articles

Fetch Lands with Dragonscale Foil This set contains five fetch land reprints, and you can get them with Dragonscale Foil in Tarkir: Dragonstorm Collector boosters

[Card]Aetherworks Marvel[/Card] is probably the biggest offender on this list as it allows you to play a fair game, but then slam an oops I win card and put Ulamog or Emrakul (or whatever unfair thing you can find) into play