mtg card explained factory type MTG Beginner Help Sheet :

Ramunap Excavator lets you play land cards from your graveyard, which is wonderful too

No one needs 21 Teferi, Master of Time (outside of possibly Crim, but that's another story...)

It's very strong at any kitchen table format, and then quite the fun thang in Commander despite its two-color identity in one of the least played two color combos

Aside from the fact that this gives you the ability to cast big old spells, Omnath also gets +1/+1 for each Green mana in your mana pool

Any combo player opening this Commander Masters card will not be disappointed

At the end of the day, its not useful to draw 10 cards if nine of them are only lands