Magmatic Hellkite will not only make your opponent have to swap out their nonbasic land for a boring basic one but when they put the new one on the field, it is tapped with a stunning counter
Then, anytime you draw a second card in a turn, Morska gets two +1/+1 counters, constantly making her larger and more of a threat to your opponents
Now it is also a fine tool against aggro and midrange decks so much that you are pretty happy running it main in most cases
Many green and black spells allow us to sacrifice a creature and obtain benefits equal to its power, so you can draw loads of cards, or cheat big creatures like Ghalta, Primal Hunger into play
I really like The Magic Mirror on the first turn
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