Dovin, Hand of Control Legendary Planeswalker Dovin Artifact, instant, and sorcery spells your opponents cast cost more to cast
To get around this restriction, its a good idea to play backup cards that are functionally similar to your win condition
The need to not miss land drops early would leave both decks with lots of land and not that much to do with it, allowing a player with Goblin Trenches to pressure the opponent slowly, go all-in or do anything in between and usually make their choice work
It essentially doubles the number of attackers you have by creating that many tokens
The fun stuff happens with the +1 that let's you flash out creatures, but I really like the -3 to drop two 2/2 Wolves onto the battlefield and stay alive for more fun times
It becomes a Treefolk creature with haste and base power and toughness equal to this creatures power and toughness