if timed correctly you could gain access to seven new cards, while opponents are left without a way to actually cast the cards they drew
Keep Your Original MtG Cards in Mint Condition If you have high-value Magic the Gathering cards, you dont want to risk damaging them
It still adds some personal flavor too, using typefacing and a Phyrexian to get the point across
As for our mechanical friends that introduce Prototype with The Brothers War, there are 18 in total (four mythics, three rares, six uncommons, and four commons) and appear in all five colors, so youve got your pick of options
Heartless Summoning Pairing Heartless Summoning with oversized creatures like Elder Gargaroth and Myr Superion is the easiest way to break the card, but why not put the -1/-1 ability to work
a trap a lot of players fall into is to try to use this as the only win condition in a lifegain or mill deck, and it just isnt fast enough