It also nullifies your opponent's graveyard - pretty backbreaking for strategies like 'Dredge' that rely on the 'yard - and allows you to grab your opponent's best threat from the void and play it free of charge (Okay, at the cost of its own life, but it's a lowly two-drop, so who cares?) Paired with targeted discard cards like the popular Thoughtseize, Dauthi Voidwalker has the potential to be super scary
Pretty straightforward in making your colorless spells cheaper
Spells you cast with mana value 6 or greater have cascade
This card, unlike many other extra turn cards, doesn't require a combo and anything fancy to activate it
What affects the value of Foil
These aren't just the most obviously "broken" cards (some might not have a home yet) but they all stand out as strong contenders for future competitive decks, either in Standard or beyond