Primary Plan
The main goal is to play Land Tax and Ivory Tower to fill your hand and gain some life. We don't play more than two or three lands until we're ready to win, so Land Tax is really just fuelling the (hopefully multiple) Ivory Towers. Library of Leng means we can keep all the lands in our hand until we need them and gain a ridiculous amount of life off the towers. We'll need about 25 life to go off, but usually we'll have significantly more.
What we need to win is Fastbond, Channel, and Fireball. All the lands we're pulling out of our deck with Land Tax thin the deck and make it easier to get what we need as well as making sure we have the lands to cast it. Sylvan Library is also very useful in digging deeper and Land Tax means we get to shuffle and see a fresh three cards each turn. In testing I've found it's pretty common to have enough life to comfortably keep all three cards drawn.
Once we have all the required cards in hand and enough life play Fastbond and drop all the lands needed to cast Channel and Fireball with Flash Counter backup if needed.
Main Deck Backup Plans
Fireball may not always be vialble so Lord of the Pit is in the main as another win condition. In this deck it basically has an upkeep of 7 life, but when we're gaining 20+ per turn, that's not really a problem.
When damage just won't do, there is the slow mill plan... This involves waiting for our opponent to mill themsleves out one draw at a time. Seems unlikely since we're thinning our deck so much, but Fastbond lets us play all of the lands in our hand and Dark Heart of the Wood lets us sacrifice them all so we can put them back in our deck with Feldon's Cane. With our high life total and refreshed library, we simply wait. Or do the cycle again if needed. Disenchant is in the main for Tormod's Crypt in case we're desperate enough to need this Plan C.
Notes
The deck plays way more lands than needed and only one dual so that Land Tax has plenty of targets. Only a few of the lands are needed to win, but the rest are needed to fuel life gain to keep us alive and feed the Channel.
The deck is 5 colour and mostly has Forests and Plains. We can get away with only a couple Swamps, Mountains, and Islands because we can hold them in hand until the turn we need them, which means even Strip Mine can't prevent us from going off through land destruction. We're also resilient to discard with our lands because of Library of Leng. And if we don't have the library for some reason we can put them back in the deck with Feldon's Cane and get them back in our next upkeep with another Land Tax trigger.
It's a bummer to draw multiples of Fastbond, Sylvan Library, or Library of Leng but they're so useful in the first instance that this isn't too big of a concern. Multiple Dark Heart of the Woods are useless as well, but since that's the card I specifically wanted to put in a deck there are and will always be two because I said so :). It can also be quite helpful if your opponent foolishly tries to have fewer lands than you, just sacrifice down to 0 lands ince you won't need them for a while.
Winter Orb slows the game right down and is basically one-sided given how few lands we want to play until the final turn.
