Then when you cast a Merfolk spell you can spend 1 to make a 1/1 Merfolk dork
You can make, in Mono-Green alone, 1/1 Squirrels, Insects, Saprolings, 2/2 Wolves, Bears, 3/3 Centaurs, Elephants, Beasts, from Squirrel Nest to Grizzly Fate to draw tons of cards
During gameplay, a player may choose to attack any other player, regardless of their position on the table, and can also choose to attack multiple different players during their attack phase
While this ability is very powerful, Gwenom, Remorseless isnt perfect
And for those aforementioned Golem decks
Since most Hydras don't have generic costs to reduce, this mana is instead automatically pumped into the X section of a Hydra's mana cost, essentially giving it a free power and toughness boost