I would add all the Surge cards out of OGW
You can also see some similar subpar cards like Root Cage here as well
One problem faced by this card is his middle of the road nature, in the most hardcore combo decks that wan't an effect like this they will probably opt for the more robust Helm of Awakening and in the decks being more aggressive they will either elect for a better ramp card or a better threat
Now, most of these cards arent remotely high-powered, but perhaps there are some unexpected synergies in here with your deck that work better than colorless removal like Nevinyrral's Disk or Introduction to Annihilation
Three is a funny point on the curve for most agro decks as the really game winning cards cost 4 or more and your agro base costs 2 or less
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