However, you'll also need some kind of card draw if you require any new cards that aren't Timestream Navigator
Another possible option for this entry was Ruric Thar, the Unbowed, which I honestly find to be absurdly funny, but I do think its too risky of a card to have as a commander
We'll definitely want to play four of each of these so that we'll have better odds of drawing both of our "colors" early in the game
Pair Nasty End with Ringwraiths, Gollum, Patient Plotter, or best of all, Haunt of the Dead Marshes, and watch your hand grow while your opponent despairs
Of course, the biggest upside of Zirda, the Dawnwaker is that its cost reduction applies to all permanents (see: the Basalt Monolith / Grim Monolith combos for Commander), and some artifact-based decks come very close to accidentally meeting Zirda, the Dawnwaker's companion restriction (for example, Modern Urza decks often only have Uro, Titan of Nature's Wrath as a permanent without an activated ability), so the unique wording on Zirda might open up new possibilities, compared to Biomancer's Familiar and Training Grounds, that will take time to explore
