The minor one is that it helps to fill up the graveyard
Nahiri, the Harbinger Nahiri, the Harbingers ultimate effect is hard to pull off, needing at least two turns of uninterrupted upticks before you can activate it
Additionally, as The Professor points out, people have already found ways to take sealed box toppers and see through them to identify which card is inside
They're also the only card rarity that's legal in the Pauper MTG format
Rionya, Fire Dancer Rionya, Fire Dancer wants a deckbuilding split of mostly cheap spells and rituals, rounded out with some absolute haymakers worth copying
Admittedly, if you arent an expert, this Goblin Shamans text box might elude you, but dont worry the art is so eye-catching, no one will mind you looking it up