Even without access to excellent green cards for mana ramp, her blood token generation should be enough to keep the deck moving
You need something sturdy that won't break from being jostled or even dropped, at least from a reasonable distance
10 Narset, Enlightened Master Extremely powerful and efficient, Narset Enlightened Master is a commander who can be utilized in a variety of strategies, including those that are based around enchantments
Since this triggers at the beginning of combat, you can play it after you have a relevant token creature, or play a relevant token creature right after youve played Determined Iteration
The idea was that the creature is trapped in a tower, so it can't attack, but because it's up in the air, it can block fliers