That being said, it also feels like Bottle-Cap Blast is ripe for being reprinted in any future treasure-focused Commander precon
None of that directly involves Zirda, but I feel like it's the direction you'll find yourself in if you build a deck with only permanents that have activated abilities
For the cost of a single snow mana, Arcum's Astrolabe is an artifact that allows its controller to draw a card when it enters the battlefield, and for the cost of one mana, may be tapped to produce one mana of any color
Brotherhood Scribe's stat-boosting effect triggers off of any effect that gives you an energy counter, so multiple separate triggers will boost your creatures each time
Whenever you draw your second card each turn with Thopter Fabricator under your control, you create a 1/1 colorless Thopter artifact creature token with flying
Gandalf the White will double such cards' triggered abilities based on entering or leaving the battlefield, which can generate tremendous advantage in the right decks