Lets take a moment to talk about The First Tyrannic War
There are way too many two-, three-, and four-drops to talk about individually, and which ones you include will mostly be left to taste or theme
For each of those cards, pay 4 life or put the card on top of your library. In essence, rather than drawing one card, you get to draw three then pick the one you want the most out of the bunch and keep it for free, or choose to draw more cards by paying some life
Uniquely among Planeswalkers, The Wandering Emperor has Flash and can be brought into play during an opponents combat step to cause massive disruption
2: Create a 2/2 blue Spirit creature token with vigilance and "Whenever you draw a card, put a +1/+1 counter on this token." 12: Target opponent chooses a permanent they control and returns it to its owner's hand
If you have problems with counters sticking, then back off your flow/extrusion multiplier a bit