Pointed Discussion

Seems...neat I could imagine using it with land destruction or something.... Might of Old Krosa is also very close to this.

For using only commons this would be fun, turn 1: Forest Slippery Bogle -Pass turn 2: Forest cast Lotus Petal cast Rancor targeting Slippery Bogle attack, end of blockers step use Elvish Spirit Guide alternative ability adding green to cast Wild Might.

This is actually pretty good. +5/+5 unless they pay {2} and +1/+1 even if they do. And it's instant speed.

Very strong early game, 2cmc +5/+5 until end of turn at instant speed is very good, very little can go wrong with this card, just wait till your opponents are tapped out and make sure your creature isn't blocked and in most cases your paying 2 for 5 damage. On top of that, this can be used to save a creature in a pinch.

Even if your opponent pays the 2 you still get a +1/+1 until end of turn.

This is a great card early game. Often during the first few turns your opponent will be tapped out playing spells. It provides +5/+5 as an instant. Even during the mid-game you should be able to sneak this ability in. It is only during extended games, after several turns, that it becomes a concern. In summary, it works superb in fast decks that aim to finish the opponent before he ramps up land. In legacy T1.5 it is useable.
The only deck color that presents a challenge is blue, which tend to have untapped land.

And Monstrous Growth is not an instant, a huge disadvantage.

If Giant Growth is a 4.5/5.0, this is a 4.0/5.0. Very solid in the right decks.

Very nice - this card does particularly well in Black/Green Infect decks - an extra 5 poison counters can easily turn the game, and this card comes out much sooner than Might of Oaks.

+5/+5 is not shabby.

I run this in a ghetto casual sligh R/G deck. I know that sounds kinda bad but hear me out. Lets say they go first. They drop a tapped dual-land. You do land reckless waif. Turn two they either A: do something, or don't do something. If B the waif flips and you wade in, killing their onedrop or smacking them pretty hard. If they don't do something they don't have two mana and Wild Might makes em take six. The great thing about the card is that, even in the worst case scenario, makes my nettle sentinel/goblin guide/whatever trade with a bear. It does not overkill sure, but in many many scenarios this is just as good as giant growth (assuming you don't trample).

In an opening hand with a one-drop creature and this, you're pretty stoked. Turn 2, swing for 6+. Heck, if you go first, your opponent may not even have 2 to spend.

Second turn Blighted Agent
Third turn this plus Groundswell (or 2x Mutagenic Growth), gg

Rhystic Might. This was in the same set as Rhystic spells, after all.