how to get all cards in mtg arena do I unlock this card Magic ? Keep getting smashed on ranked with that don't seem be on the game ??? Why do we have to

The only way to get around Mystic Mine is to draw some spell and trap destruction, which is not as common as it may sound

If you want to check out the full decklists, you can do so over on the main Wizards site

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The same is true if the creature is destroyed but instead of going to its owner's graveyard, a replacement effect moves it elsewhere, such as exile

Plus a 1/1

Lotus Petal is a horrendously bad way to get extra mana, forcing you to give up a card just to get one mana, and not giving you any other choices if you don't need the mana