March of the Machine and March of the Machine Commander added a solid number of knights to the mix
I mean, its nice, of course, but do we actually need it to have deathtouch Turn 3
The real boot to the nethers is the plot cost, which can bank this card for whenever your token army materializes when you've also got the right number of cards in hand
Just to give you an idea of the scope, the mechanic shows up on cards from at least 44 different products if you include things like Duel Decks and Commander precons
You need to deal only 1 point of damage, so trample really helps
For example, the next canon set to be released, Tarkir: Dragonstorm, sports an MSRP of $24.99 on its Collector Boosters