Thrill-Kill Disciple

Squad—{1}, Discard a card. (As an additional cost to cast this spell, you may pay its squad cost any number of times. When this creature enters, create that many tokens that are copies of it.)
When this creature dies, create a Junk token.

Fallout

Squad—{1}, Discard a card. (As an additional cost to cast this spell, you may pay its squad cost any number of times. When this creature enters the battlefield, create that many tokens that are copies of it.)
When Thrill-Kill Disciple dies, create a Junk token.

Squad—{1}, Discard a card.
When Thrill-Kill Disciple dies, create a Junk token.

You pay all costs and follow all normal timing rules for the card played from exile with a Junk token’s ability. For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty.

If the spell is countered, the squad ability will not trigger, and no tokens will be created.

If the spell resolves but the creature with squad leaves the battlefield before its squad ability resolves, you’ll still create the token copies.

If, for some reason, the creature doesn’t have the squad ability when it’s on the battlefield, the ability won’t trigger, even if you’ve paid the squad cost one or more times.

Some spells and abilities that create Junk tokens may require targets. If each target chosen is illegal as that spell or ability tries to resolve, it won’t resolve and none of its effects happen. You won’t create any Junk tokens.

The tokens created by the squad ability aren’t “cast,” so any abilities that trigger when a spell is cast won’t trigger for the copies.

You can’t sacrifice a Junk token to pay multiple costs. For example, you can’t sacrifice a Junk token to activate its own ability and also to activate the second ability of Junk Jet.

You may pay the squad cost any number of times. You will create a token that is a copy of that permanent for each time you paid the squad cost. If you paid the squad cost multiple times, the tokens will all enter the battlefield simultaneously.

Copy

(This token can be used to represent a token that's a copy of a permanent.)

Junk

{T}, Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.