Pile On plays in the same space with convoke giving you what amounts to a free spell, roughly speaking
This said, both cards are currently banned in Legacy, and they are both brokenly powerful on their face, so my guess would be that they were simply too good for Standard, rather than being part of a specific oppressive combo
Wrap Up Deflecting Swat | Illustration by Greg Staples As you can see, target-changing spells come in a variety of mana values and colors, even though their effect is ultimately the same
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Buy This Card Notes and Rules Information for Silence: Silence won't affect spells that your opponents cast before you cast Silence, including any spells that are still on the stack
Because that is where these Be-Hated Commanders come from and elicit those groans
It's a good swap as this one can be cast for 3 mana earlier in the game and you'll draw three cards for three mana but a foe nets some Treasures and gets' a big ol' scry