If the top card of your library changes while you're casting a spell, playing a land, activating an ability, or taking a special action, you can't look at the new top card until you finish doing so
The first historic spell you cast will leave you with two Mishras Self-Replicators
The possibilities here are endless, and you get a 3/2 body as well which is no joke
Heroic Intervention (Aether Revolt) No damage, no problems Finally, we have Heroic Intervention
It's back here in Honorable Mention since it only blocks grounded stuff and costs a bunch
In: BetrayalBetrayal, Verity CircleVerity Circle, Clan CrafterClan Crafter, Tezzeret, Betrayer of FleshTezzeret, Betrayer of Flesh, Shimmer DragonShimmer Dragon, Rise and ShineRise and Shine All of these additions will cost you less than $30