It is the cards themselves that hold the key, there are types of design and certain mechanisms that go a long way to minimising both mana floods and mana screws
It destroys all creatures with power 4 or greater , which often wipes the biggest threats while leaving your own token board intact
As you can see, this format has all of the mana you need but just one spell cast per turn, so only copying one per turn won't be a restriction, and getting the copies for free each turn is big value
Deathtouch doesn't just apply to combat damage but any damage dealt by the creature
Thats kind of good, but too much has to go right for Galuf's Final Act to interest me
It also gives your creatures haste for , which means you can get a lot of extra damage out of your early creatures and your dragons on the turn they come in