A combo deck revolving around to draw off casting beasts, / to reduce their costs, and a bajillion 1 cost beasts.
Finding the combo pieces...
is the go-to avatar for any combo deck. With a 50 card spellbook compared to the 30 card atlas, is what you're hunting for first. By turn 1 you will have seen 16% of your spellbook (mulligan anything that's not it, then seer scry turn 1). Continue to seer scry every turn and dig with your rivers, , , , , and feed beasts to the .
Once you have your splendor, you can either play it to pull back into the game by loading up some defenders, or start digging in your atlas for / with things like and seer scry.
Aim to build up enough beasts in hand to chain them, or bank them up in one go with a big .
Surviving the early game...
The 1 cost beasts are great chump blockers, can help stall and be fetched with , and you've got as your one potential boardwipe. You're probably going to ignore most of what the opponent does in favour of digging for your combo unless they are really fast to put on pressure.
Winning...
Flood the board with an army of squirrels out of nowhere!
Either untap next turn and send your weasels on the assault for a one turn kill, or can give them all charge to do it immediately.
As a backup win condition, is there to smack em in the face for 20.