good mtg commander decks Magic: The Gathering Starter Deck Bundle – Includes All 5 : Toys & Games Produced by Wizards of the Coast Crafting Commander Decks for Magic:

Sacrifice a creature: Regenerate this creature

This army of small creatures and abundance of mana is then used to activate some kind of effect that pumps your entire board for a lethal alpha strike such as casting Craterhoof Behemoth or activating a card like Allosaurus Shepherd

Skull Rock, Island Fortress is one of the payoffs for this, giving you passive lore just for having Pirates on it

This is a massive 1-drop that always trades up thanks to deathtouch

Its probably not competitive, but it is a really interesting bit of design thatll see play in Commander if nowhere else

Basalt Monolith + Grim Monolith Basalt Monolith and Grim Monolith are kind of like rituals in that they deliver a burst of mana for one turn, but the option to untap them makes them significantly stronger