Decimator of the Provinces is basically a Reality Smasher that gives all of your creatures +2/+2
That is, if Gigantoplasm is a copy of a creature with base power and toughness 2/2 and you activate its ability making it a 4/4 creature, another creature that becomes a copy of Gigantoplasm will have base power and toughness 2/2
It works best with cards like Third Path Iconoclast and Sokka, Tenacious Tactician that flood the board with bodies as you sling spells
Obviously, this is a case where the Adventure isnt always going to get cast before the creature, but its nice having that late game ability to see a bunch of cards Lagoon Breach is removal, even if it is situational, and then the whale is certainly beefy enough to trade for something, so were talking about a 2-for-1 here
Gerrard's Wisdom (T1, Ext, S, Block) The first card on the list to see play in every Constructed format, Gerrard's Wisdom seems unassuming at first
Now I should just try to power my way through the Arena novel