Notably, those decks don't even have to be dragon-based to get serious value from Two-Headed Hellkite, since any deck would benefit from having a huge flying beater that draws cards generously
Theres a few Azorius snow cards that tap your opponents creatures or prevent them from untapping, including Icebreaker Kraken, and you can supplement them with other tappers from WOE and other cards with icy or snow card art
Keep in mind that you wont be able to play the learn mechanic at its full potential if you dont draft any lesson cards
For four mana, I can deal X damage to target creature or planeswalker, where X is the greatest power among creatures I control and if it would die this turn, I can exile it
Elbrus, the Binding Blade / Withengar Unbound I don't recall seeing this card in action, either in Standard or after its rotation