The card must be able to be built-around in multiple ways in the format (sorry The Rack, Scapeshift, and Ad Nauseam, you don't count.) At least one deck that uses the card must be Modern viable at the time of this publication Now with only ten spots to use, I know I'll inevitably leave out some favourites, so please don't be shy in the comments with some honorable mentions
With time, Rapid Strike evolved and became more like a toolbox deck, getting the incredible addition of Inteleon VMAX and Medicham
Since Containment Priest has flash, you can often catch people by surprise and put a stop to mass reanimation or even take most of the punch out of a huge Genesis Wave by preventing creatures from entering the battlefield
I think Ive finally found my favorite one
Whenever another creature enters the battlefield under your control, Terror of the Peaks deals damage equal to that creature's power to any target
It's pretty notable how many staples worth around $6-7 price point I had to leave out, from Lightning Greaves and Fabricate to Krark-Clan Shaman and Mindslaver