In situations like this, people tend to say things like, Well, its a top deck that survives rotation
Some of the top cards are Liliana, Dreadhorde General, Twinflame Tyrant, Doubling Season, Bloodthirsty Conqueror, Sire of Seven Deaths, and Banner of Kinship
Still, I just can't shake my initial gut reaction
For example, if a red creature spell has an additional cost to cast it and you spend red mana from a snow source to pay that cost, Boreal Outrider's ability will trigger
1st - Vivi OrnitierVivi Ornitier 2nd - Storm, Force of NatureStorm, Force of Nature 3rd - Deadpool, Trading CardDeadpool, Trading Card 4th - Ugin, Eye of the StormsUgin, Eye of the Storms 5th - The Soul StoneThe Soul Stone The Soul Stone sure picked up a high score pretty quick, considering Marvel's Spider-Man has only been out for a few weeks