This Arena-exclusive mechanic works with Quickbeast Amulet by increasing its intensity count by a creatures power every time a new creature comes into play under your control
Another rule of thumb for building a cube is that you want it to be singleton, or only containing a single copy of each card
A mechanic mostly unused until The Warhammer 40k Commander precons and The Brothers' War dug it up, unearth has proved a popular solution to the problem of graveyard recursion
Now that quantities of Secret Lairs are even more limited, they will likely be sold at an even higher markup on the secondary market when, before, scalping Secret Lairs was a risk because most players simply bought them directly from Wizards when they could
Thats not to say these cards are bad in other Commander decks, but rushing out a turn 8 play on turn 5 or 6 just doesnt have the same level of impact on gameplay as rushing out a turn 3 or 4 play on turn 1 unless its winning you the game right then and there
Were I looking at it from building a top 20 list, I would exclude this from consideration as the grading increase holds pretty level across the harder to find cards