Snow-Miyo (Oathbreaker)

Tamiyo, Field Researcher is extremely effective in this deck because of your access to fast creatures, some of which have flying, and her ability to tap down your opponents creatures, preventing combat blocking. Thin out your deck of instants & sorceries as quickly as possible (don't be afraid to use your 3 counters early game, since two are less effective late game, and it will thin out your deck, increasing the effectiveness of Genesis Wave.

Ramp, control the board, Tamiyo, Field Researcher gives you great card draw for your fast, value-based snow creatures.

Cast Tamiyo, Field Researcher turn 2, 3 or 4 depending on your mana curve. Play Genesis Wave for 5,6 or 7 mana depending on your ramp on Turn 4 or 5.

Rimewind Taskmage to tap Winter Orb at the end of your opponents turn, allowing you full use of your lands.

Brainstorm is an easy way to guarantee two permanents of your choice on top of your library for Genesis Wave.

Turn your Bloom Tender, Birds of Paradise, and non snow mana rocks in to snow producing mana sources with Rimefeather Owl. This helps you pay cumulative costs for Cover of Winter and Glacial Plating.

Sword of Feast and Famine with Winter Orb out makes your friends hate you when it connects.