Aika Thompson

When Aika Thompson attacks, put a +1/+1 counter on it then roll a d20.
1-10 | Put a +1/+1 counter on each creature you control.

11-17| Look at the top X cards of your library, where X is the number of +1/+1 counters on Aika Thompson. Reveal one and put it into your hand. Put the rest on the bottom of your library in a random order.

18-20| Remove any number of +1/+1 counters from Aika Thompson. For each one, search your library for a land card and put it onto the battlefield.