I keep them next to my body . One night I had slept on my arm and the next morning I couldn ' t feel the arm for about 35 minutes . It felt really strange when I moved the rest of my arm . <| sep |> I didn ' t say a thing about that . I said that you spend tempo and a card on them , and then you have more mana on following turns . What I didn ' t talk about at all was that how you utilize your other cards dictate how you might benefit from that investment . It makes your slow cards better plays in terms of tempo and value , so it really depends on which part of the ramp gameplan you ' re looking at . It ' s kind of a matter of asking whether it ' s the Wild Growth or the slow minions that ' s the constant and which one is the variable . Innervate is pure tempo , for instance , but a turn 2 Violet Teacher will recoup your value if you can use that proactivity to get good value trades . You spent a card to make a slow card much faster , and that ' s powerful indeed . Astral Communion on turn 1 going second is a play that can be followed by a Ragnaros the Firelord . It ' s likely that you get a lot of value , because your big dudes can just wipe the floor with their guys on a cardforcard basis . But Ragnaros the Firelord is a lot of tempo for turn 2 .