It can be very brutal in combination with an Overrun effect, perhaps they left a Wildspeaker in play with 4 loyalty because they were able to kill all your creatures
Teferi, Time Raveler is an extremely powerful card that fits well in this deck, since your creatures are so good at blocking, and the +1 ability allows you to cast Bring to Light at instant speed, which is just amazing with a card that flexible, and it also makes sure your Bring to Light will resolve
If you have been watching Japanese card openings online and wondering whether to make the switch, for the majority of collectors the answer is yes
Also remember that you cant use Welding Jar to regenerate from Shatterstorm but can use it to regenerate under Creeping Corrosion
Considering there are a zillion reprints of this card, I'm intrigued to see gold-bordered copies selling for more than all the new copies Wizards of the Coast has printed