An opponent has an instant and/or sorcery in their graveyard.
({4} magic symbol) available.
Steps
Activate
The Chain Veil by paying ({4} magic symbol) and tapping it, allowing an additional activation of each of your planeswalkers' loyalty abilities this turn.
Activate
Tasha's first loyalty ability by putting a loyalty counter on it, causing you to draw a card and exile an instant and/or sorcery card from an opponent's graveyard with a page counter on it.
Activate
Tasha's second loyalty ability by removing three loyalty counters from it, casting an instant or sorcery spell with a page counter on it from exile.
Displacer Kitten and
Tasha trigger.
Resolve the
Tasha trigger, creating a 3/3 Demon creature token.
Resolve the
Displacer Kitten trigger, blinking
Tasha.
Resolve the instant or sorcery spell.
Repeat from step 2.
Note that you must abide by targeting restrictions when casting the instant or sorcery spell, and so not all instants and/or sorceries in your opponent' graveyards may work for this combo.
Results
Infinite card draw.
Infinite draw triggers.
Near-infinite casts of instants and sorceries in your opponents' graveyards.