It breaks even in terms of how much total additional power and toughness you get with a traditional Anthem at three creatures, but giving one of them +2/+2 instead of +1/+1 can really change the texture of combat, and things get out of control once you have four or more creatures
You can get enchantments like Ghostly Prison, Aura of Silence, or even removal spells like Seal from Existence
Interestingly, an insane number of PSA 10s exist (12,000 at the time of writing), which drives down the value considerably
The two effects of the cards were designed so if you are able to do both on the same turn, they have synergy with one another
Many overseas proxy sites take forever to send you your order, so for this type of product the timing is very fast
All told, I'm quite excited for both Lumbering Falls, and for Battle for Zendikar in general