Almost every ally creature in Magic: The Gathering has an effect that buffs every other ally, gets better the more allies are on the battlefield, or triggers when more allies come into play
In addition to leading to a much more powerful late game because you have very few lands remaining and a lot of powerful spells in your deck, this also makes cards that can use the cards in your graveyard betterLrien Revealed makes Gandalfs Sanction better and the creatures make Sams Desperate Rescue and Revive the Shire betterin addition to making sure you have a target, they change the way these cards function from just getting back a card youve already cast, meaning one that you had enough mana to cast previously, land cyclers allow you get back either a land or a more expensive creature, giving you both more consistency and more flexibility
Seize Power Once More
When it enters, it strips resources from the whole table while drawing you cards, sometimes enough to fully refill your hand
If you do, create a token that's a copy of that card and that's tapped and attacking
Gut, True Soul Zealot Gut is a decent sacrifice commander that can be any two colors you wish