11 | Delighted Halfling Considering they are one of the most iconic cards in green, it feels rude not to put Llanowar Elves on this list
Wall of Mulch

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The edge cases where casting it in combat after my opponent activated some ability or cast some spell or another are few and far between, but I like having the option to draw a card for one mana in response to any play my opponent might make
Linear Decks Recall that linear decks are the most extreme kind of decks, focused on a very single-minded game plan