Not so much...
Here's an example that happened to me in the prerelease.
Turn 1: Land, go (it was 5 AM and I messed up, I should have played my Joraga Treespeaker, but forgot)
Turn 2: Land, Joraga Treespeaker
Turn 3: Land, Level up Treespeaker (it can not tap for GG)
Turn 4: Land, Ondu Giant...