do you control cards in your graveyard mtg TR&CI 170: What Is Card When It Goes To The Wonder MTG - Judgment #54

Believe me, that's a lot better than saying this does damage to your opponent eight times and boy, red really hates blue twice

On paper the Primeval Titan seems a bit better with the trample, the card advantage and the ability for the game to get very out of hand however you need the support cards for Primeval and you need the right deck

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On an empty board she makes beaters, with topdeck mode she can haste-enable your creature to hit first, she can kill or trample out of a locked board state, and more

The biggest drawback here is how costly it is to cast Maralen, but as long as you can exile spells with the ETB ability, you go leaps ahead in mana and cards

You can think of cards like Thief of Blood and Mikaeus, the Lunarch as counter movers, but thats not actually what those cards are doing in the context of the rules