Well of Lost Dreams is the best of these options : any time you gain life, you can pay any amount of generic mana up to the amount of life you gained, and draw that many cards
The Owl Pokmon is known for having an internal organ that tracks the earths rotation, ensuring that it always knows the time
Check out the article I wrote last week about how you dont need Dual Lands in Commander for some tips on the lands you should pick up for fixing
Gardevoir is essential in energy production, adding one Psychic Energy to Mewtwo ex each turn
And if you were already planning to buy a card and arent concerned about saving money, make a card anyway and put the $3-4 you would have spent in the card instead
Nahiri, Forged in Fury and Isshin, Two Heavens as One being prime candidates