What strategies and cards should I consider when building a Magic: The Gathering deck focused on Progenitus?

When building a Magic: The Gathering deck focused on Progenitus, consider including cards that can help you ramp up your mana quickly, such as mana dorks like Birds of Paradise or Noble Hierarch. Additionally, include cards that can protect Progenitus, such as counterspells or cards that grant hexproof or indestructible. Cards that can search for Progenitus or put it directly into play, like Tooth and Nail or Defense of the Heart, can also be valuable additions to your deck. Lastly, include cards that can support Progenitus's powerful abilities, such as cards that grant trample or double strike.