Blue Suns Twilight Whats yours is mine Taking control of an opponents creature is always a fun thing to do, but it can often be a little too expensive to be worth it
For a more detailed guide to building decks with combos, check out Digital Deckbuilding - How To Find EDH Combos On EDHREC And Commander Spellbook
Booster draft Limited focuses heavily on creatures and board states, and that's where green mana shines most of all
Lastly, they come into play tapped, which is a significant enough cost to prevent you from running only surveil lands and tends to reward decks that develop at a more casual pace in my experience
Scaled Wurm was the core set replacement of Craw Wurm, and although it cost two more Mana, was a 7/6 as opposed to its Fourth Edition counterpart which was a mere 6/4
As a hypothetical curve to show quite how obscene this can look, you could cast your copy of The Ringhart Crest on Turn 2, on Turn 3 you use it to resolve Questing Beast, and then you get to land your Yorion on Turn 4, blinking the Crest to turn it into a Kolvori