ETB to the max

[Sparkle Ninja]

{Roon of the hidden realm} + {Intruder alarm} + {burning tree emissary}

[particle]

oh intruder alarm you are so broken. play it with any other card and its almost a combo.

[Brawler_1337]

Too bad you can't run this in a Roon EDH deck.

[Sparkle Ninja]

Too bad you can't run this in a Roon EDH deck.

{Palinchron} or {Great Whale}

[Wally]

{Roon of the hidden realm} + {Intruder alarm} + {burning tree emissary}

By the way this is not repeatable, it can only happen once each turn.

Mr Roon clearly states at the beginning of the next end step. Once those triggers have gone on the stack it is not the Beginning of the nect end step any more so those triggers won't happen again until the end of the next turn.

[Sparkle Ninja]

{Roon of the hidden realm} + {Intruder alarm} + {burning tree emissary}

By the way this is not repeatable, it can only happen once each turn.

Mr Roon clearly states at the beginning of the next end step. Once those triggers have gone on the stack it is not the Beginning of the nect end step any more so those triggers won't happen again until the end of the next turn.

Way to ruin my day. Jk thanks I got really excited there

[AdamS]

{Roon of the hidden realm} + {Intruder alarm} + {burning tree emissary}

By the way this is not repeatable, it can only happen once each turn.

Mr Roon clearly states at the beginning of the next end step. Once those triggers have gone on the stack it is not the Beginning of the nect end step any more so those triggers won't happen again until the end of the next turn.

even if it did work it doesnt do anything useful

[Sparkle Ninja]

{Roon of the hidden realm} + {Intruder alarm} + {burning tree emissary}

By the way this is not repeatable, it can only happen once each turn.

Mr Roon clearly states at the beginning of the next end step. Once those triggers have gone on the stack it is not the Beginning of the nect end step any more so those triggers won't happen again until the end of the next turn.

even if it did work it doesnt do anything useful

If it worked it'd be infinite enter the battlefield triggers off of anyone like {Purphoros God Of the Forge}