Well, that's a lot to chew, before even getting down to what these battles actually do
A hivemind ruled by a being known as the Mycotyrant
The Rolling Attack ability requires you cast a whopping three or more spells in the turn to give it trample, which would suggest a storm strategy, But the Electric Thunder ability triggers whenever Blanka becomes the target of a spell, and most storm spells dont target a creature
If this were a first-time reprint, it would be higher on this list
You may have Moritte enter as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling
This is incredibly powerful in conjunction with the right cards, as it allows you to really accelerate the resources you have available and stay a step ahead of your opponent all the way