The +1/+1 counter is doing a lot of work here to help amp up the pressure
A market price of $226.26 on TCGPlayer certainly reflects the card's desirability, although some listings go as low as $215
Marrow-Gnawer is the archetypes beating heart: all your Rats gain fear (nearly unblockable), and you can tap-and-sacrifice a single Rat to create X tokens equal to the number of Rats you control
Read up on all the sets details and explore the new cards in these articles: See whats coming in MTG Arenas State of the Game Innistrad: Crimson Vow Check out the cards in the Innistrad: Crimson Vow Card Image Gallery Learn about the Innistrad: Crimson Vow mechanics New Store Offerings for Innistrad: Crimson Vow MTG Arena Store packs are on sale for Innistrad: Crimson Vow , plus new bundles: Innistrad: Crimson Vow Sticker Bundle 5,000 gold or 1,000 gems Three Innistrad: Crimson Vow stickers Innistrad: Crimson Vow Borderless Dual Land Card Styles Bundle 5,000 gold or 1,000 gems Five borderless dual land card styles Innistrad: Crimson Vow Events Start playing with the new cards and building your collection in these events with the release of Innistrad: Crimson Vow : Premier Draft Innistrad: Crimson Vow Traditional Draft Innistrad: Crimson Vow Sealed Innistrad: Crimson Vow (until December 3) Traditional Sealed Innistrad: Crimson Vow (until December 3) New Jump In
If you resolve two copies of Isengard Unleashed in one turn, damage dealt by sources you control will be multiplied by 9
Its hard to get rid of, stabilizes your life total, and even blocks well
