This is a question regarding infinite loops and shortcuts at Competitive REL.

Here is a potential scenario.

• Both my opponent and Myself are at 20 life each.

• I have no creatures on the battlefield.

• My opponent has a Kiki-Jiki, Mirror Breaker and a Warstorm Surge on the battlefield.

• I have a Rakdos Charm in hand.

• My opponent plays Deceiver Exarch and begins a loop where he uses Kiki-Jiki to copy the Exarch, and uses each new Exarch to untap Kiki-Jiki, dealing me 1 damage every time he does it.

• If I cast Rakdos Charm when the 18th Exarch token's trigger is on the stack, I win.

• If I cast it at any other time, I lose.

• If my opponent knows that I'm going to cast it than he won't make the 18th token, and he'll simply attack and kill me.

Now, the question is:

If my opponent proposes a shortcut, saying

"I'll make 500 tokens and kill you."

Can I accept the first 18 iterations of that shortcut and react by saying

"After the 18th token enters the battlefield and its ETB trigger goes onto the stack, I cast Rakdos Charm."

Or do I have to propose a new shortcut for the 18 iterations, potentially giving my opponent information?

This is a question regarding infinite loops and shortcuts at Competitive REL.

Here is a potential scenario.

• Both my opponent and myself are at 20 life each.

• I have no creatures on the battlefield.

• My opponent has a Kiki-Jiki, Mirror Breaker and a Warstorm Surge on the battlefield.

• I have a Rakdos Charm in hand.

• My opponent plays Deceiver Exarch and begins a loop where he uses Kiki-Jiki to copy the Exarch, and uses each new Exarch to untap Kiki-Jiki, dealing me 1 damage every time he does it.

• If I cast Rakdos Charm when the 18th Exarch token's trigger is on the stack, I win.

• If I cast it at any other time, I lose.

• If my opponent knows that I'm going to cast it than he won't make the 18th token, and he'll simply attack and kill me.

Now, the question is:

If my opponent proposes a shortcut, saying

"I'll make 500 tokens and kill you."

Can I accept the first 18 iterations of that shortcut and react by saying

"After the 18th token enters the battlefield and its ETB trigger goes onto the stack, I cast Rakdos Charm."

, or do I have to propose a new shortcut for the 18 iterations, potentially giving my opponent information?

This is a question regarding infinite loops and shortcuts at Competitive REL

here is a potential scenario.

• Both my opponent and Myself are at 20 life each.

• I have no creatures on the battlefiled.

• My opponent has a kiki-jiki, mirror breaker and a warstorm surge on the battlefield

• I have a rakdos charm in hand.

• my opponent plays deceiver exarch and begins a loop where he uses Kiki-Jiki to copy the ex-arch, and he uses the new exarch to untap Kiki-Jiki, dealing me 1 damage every time he does it.

• If I cast rakdos charm when the 18th exarch token's trigger is on the stack, I win.

• If I cast it at any other time, I lose

• If my opponent knows that I'm going to cast it than he won't make the 18th token, and he'll simply attack and kill me.

Now the question is:

If my opponent proposes a shortcut, saying

"I'll make 500 tokens and kill you"

Can I accept the first 18 iterations of that shortcut and react by saying

"after the 18th token enters the battlefield and it's ETB trigger goes onto the stack, I cast rakdos charm.

Or do I have to propose a new shortcut for the 18 iterations, potentially giving my opponent information?

This is a question regarding infinite loops and shortcuts at Competitive REL.

Here is a potential scenario.

• Both my opponent and Myself are at 20 life each.

• I have no creatures on the battlefield.

• My opponent has a Kiki-Jiki, Mirror Breaker and a Warstorm Surge on the battlefield.

• I have a Rakdos Charm in hand.

• My opponent plays Deceiver Exarch and begins a loop where he uses Kiki-Jiki to copy the Exarch, and uses each new Exarch to untap Kiki-Jiki, dealing me 1 damage every time he does it.

• If I cast Rakdos Charm when the 18th Exarch token's trigger is on the stack, I win.

• If I cast it at any other time, I lose.

• If my opponent knows that I'm going to cast it than he won't make the 18th token, and he'll simply attack and kill me.

Now, the question is:

If my opponent proposes a shortcut, saying

"I'll make 500 tokens and kill you."

Can I accept the first 18 iterations of that shortcut and react by saying

"After the 18th token enters the battlefield and its ETB trigger goes onto the stack, I cast Rakdos Charm."

Or do I have to propose a new shortcut for the 18 iterations, potentially giving my opponent information?