These are the original five ally-color fetch lands that arrived in Onslaught: And Zendikar completed the fetch land cycle with the enemy-color fetches: Now, why are these original fetch lands so revered
Matches are played as per the rules of your chosen format (Commander, Standard, etc) but with the addition of a planar deck, a separate deck of oversized plane cards that change the rules of the game
You scry a Forest to the bottom and then look at the top
If you dont fancy paying transforming them into creatures, you can simply incubate with cards like Compleated Huntmaster, Bloated Processor, Marauding Dredship, and Merciless Repurposing and sacrifice the tokens they create instead
Myrs are great with color because most Myrs have a single color that they flavor
You get a free 4/3 haste from the yard when you cast your second creature spell of the turn