If you chose Jeskai and creatures you control deal combat damage to multiple players at the same time, Frostcliff Siege's ability will trigger once for each player dealt combat damage this way
Since Aura and Equipment tend to give large stat-boosts, this can be enough to be lethal
But if you wait around for 2 turns to ensure you always have a blocker and a removal spell up, you give Infect precious time to draw answers
The least restrictive of gold cards (ie just two colours) are about half as playable than a mono card so how unplayable are three colour cards
So, who cares if a measly 572 of them wont be reprinted
9: You get an emblem with "Whenever a player casts a spell, you create a 2/1 blue Ninja creature token." Legendary Planeswalker - Kaito Evasion (CTRL to add secondary) Finisher Kylox, Visionary Inventor Menace, ward , haste Whenever Kylox attacks, sacrifice any number of other creatures, then exile the top X cards of your library, where X is their total power