mtg foundations japanese cards Herald of Eternal Dawn Up to one target creature you control cant be blocked this turn Doubling Season | Foundations -

And looking at other versions, it may very well stay that expensive: All its Baldur's Gate printings cost between $80-$100, for a card that sees a lot of cEDH play

For approximately $14, players can have a card that doubles the mana each permanent produces

On top of that you throw in Beast Whisperers ability and you get a colorless card that beats out Coat of Arms in my book

Power 9 I cant do a Top 10 of broken cards and not talk about the Power 9

It is a daunting world

Any cards which dont fit into one of those categories are probably lowering your power level, so consider how many you play when finding the right balance for your table