I always thought that braces had such a constricting and caged look that felt fitting for the creepy feeling of the prompt
With Half-Shark, you can just keep returning action cards to your hand through challenging, opening yourself up to all sorts of combos and more importantly easy access to targeted removal when you need it
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But what the card does do is make your deck operate more consistently, allowing you to play lands from the top of your deck, and dodge the dissatisfaction of a late land draw
Essentially a form of attrition, you sacrifice your board or become harder to attack because your opponents lose their creatures as well
How it works: A guide to MTG Cascade While the original Nissa Revane still sees some play thanks to its ability to draw elf cards straight from the deck, cards like Nissa, Sage Animist and Nissa, Worldwaker are more useful for drawing lands (and, often, turning them into creatures)