That's an interesting go wide payoff, and you can move around the bonus if a new creature enters (or if you flicker stuff) Someone out there was asking for the white death's shadow I'm sure Also dumping your hand with this seems strong
These proactive bans show a clear desire to slow the format down and promote more interactive, back-and-forth games of Magic
However, if the cards front feels completely smooth, thats a clear red flag
The other thing I like about this card is that it helps solve a larger problem we've been having
While many of these cards were powerful to the point of banning in Standard, Historic has a larger card pool and therefore more ways to interact or respond to powerful cards
While this hasn't affected the power level concretely, it has given Wizard's designers more room to play with theme and storytelling through cards and mechanics