If you're running Silencer as part of your morph suite, it's because you want to hide some additional countermagic beneath your army of mysterious morph creatures
There are also plenty of nonplaneswalkers as well, like Elesh Norn, Mother of Machines from legendary creator Junji Ito
You dont need to have max speed to get value from it, but the faster you go, the better it gets by granting you access to more card draw
6:20pm Round 1 pairings are announced
Commons and Uncommons can still command a healthy price, though, especially if every player in the world wants four copies
I even included a copy of Ribbons of the Reikai briefly before determining there was probably enough draw power to get by already and a better version of this effect was already here in Distant Melody