As far as Commander goes, I think that Nature's Rhythm is a very playable card but will probably be a backup to Finale of Devastation since, in Commander, it's pretty easy for a green deck to make enough mana that Finale not only tutors up a creature but also Craterhoof Behemoths up the team for lethal
To make things more complicated, not all changes are permanent additions to the games ever-changing Standard format Magic tournaments usually uses only the last two years worth of cards which means that people that saw a game once, may experience another very different set of cards and frames when they come across it again some years afterwards
#1 Mox Diamond Set: From the Vault: Relics Increase: +$125.80 Current Market Price: $1,158.57 While it doesnt sport the classic card frame associated with Premodern, this version is still playable in the format
Well cover first strike and double strike in a later article
How to Mulligan with an Aggro Deck When you pilot an aggro deck, mulligans are about balancing speed with stability
[card]Freyalise, Llanowars Fury[/card] The $100 Upgrade What to remove: [card]Terastodon[/card] This guy is pretty good for most budget decks, but were going to replace him with a creature that doesnt give our opponents elephants when we blow up their stuff