Lock them out with plansewalkers while proceeding to slowly end the game where they can't do anything about it. Or end it fast with the chain veil combo which has 2 ways of going off:

Method 1: Tezzeret the Seeker, The Chain Veil, and Everflowing Chalice/Astral Cornucopia on 4

Tap rock (4 floating) untap with tezz's +1. Tap rock (8 floating) tap chain veil (4 floating) +1 tez, untap chain veil and rock. tap rock (8 floating) activate chain veil again (4 floating) untap with tez, repeat. This creates infinite loyalty activations for you other walkers.

Method 2: Teferi, temporal archmage, Tamiyo, the moon sage's emblem, 2 mana rocks that add up to 5 mana, one land that makes blue, and the chain viel. (this one takes a bit more setup)

Tap and rocks (1 blue, 5 of anything floating) -1 teferi. Tap and rocks (2 blue, 10 of anything floating) use chainvel, (2 blue, 6 of anything floating), Tap and rocks (3 blue, 11 of anything floating). eventually you will kill teferi, with the -1, while giving your planeswalkers more activations. You use the extra mana you have floating to replay teferi who was bounced to your hand by the tamiyo emblem. then you can repeat this process.

My favorite way of finishing the game is either having an active gideon of the trial's emblem out or archmage ascension online, and drawing everyone out with Jace Beleren's +2 with your infinite activations. You can also just drain them to death with cards like ugin or sorin markov but I don't find that as fun.

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