You still do not get it . You are only calculating the draw option. There is a healing option as well. You are drawing a card which is 1 mana usually plus a 5 mana cost 5/5 + 1 mana for the versatility of choose effect.
Ps. I love seeing druids cry about this , in my eyes alwasy was a very overpowered card.
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Get Call since it's only epic. Princess can prob be replaced with a 5 mana minion like Ram Wrangler even tho it's kind of random
edit to above: Forlorn can be really good or no effect, depends on your hand. But it's pretty cool when it works.