The problem is that most renters (and homeowners) insurance policies will not cover very much of your Magic collection
In other words, he's happy to cast some learn instants and sorceries to recur creatures repeatedly (that can also learn, in many cases) to go grab Lessons to cast to recur creatures repeatedly
The final changes to the deck are as follows
-1/-1 counters are obviously the first choice if youre looking to just reduce their toughness
Interestingly, when Mike Turian, the set's lead developer, put Tarmogoyf back in the file, he did it from memory, and instead of putting in the */* stats I'd chosen when I made the card, he made it */*+1 as that's how it worked on Lhurgoyf
Being single color means it can go into more decks and even when its not convoked, it has a perfectly reasonable casting cost for exiling any nonland permanent