Aside from cards that fuel Tergrid there's also a good amount of removal
Whenever The Goblin Mastermind deals combat damage to a player, you create a token that's a copy of one of Skirk Prospector, Goblin Lackey, Goblin Piledriver, Goblin Warchief, Boggart Harbinger, or Goblin Ringleader, chosen at random
Weird Angel Flame, for example, grants a heroic ability, but it can also grant protection from (checks notes) even mana values
Once you get twenty counters on it, BOOM, youre winning the game
Urza, Lord High Artificer lets you break that symmetry on two particularly unfun cards, Winter Orb and Trinisphere
Even if it does end up being strong, this is a great card to print into a format where players are worried about Up the Beanstalk