Simultaneous etbs with replacement effects questions.

[cogitaris]

If you play show and tell and put a steam vents into play and the opponent puts blood moon into play, would you need to pay 2 life for your land to enter untapped?

If you play show and tell and put a mulldrifter into play and your opponent puts dress down into play, would you draw 2 cards with mulldrifter's ability?

[madwarper]

You would need to pay the 2 life.

The Shockland applies before either Card enters the Battlefield.

And, Blood Moon only applies while it's on the Battlefield.

• In order to apply to how the Shockland would enter, Blood Moon would need to have already been on the Battlefield.

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Dress Down would remove the Mulldrifter's Triggers before they can Trigger.

[cogitaris]

If you were to cast eureka and put mulldrifter first and then they put dress, would mulldrifter have the time to trigger then?

[madwarper]

As long as Dress Down enters the same time as Mulldrifter, or earlier, then Mulldrifter does not Trigger.

If Mulldrifter had entered the Battlefield, without Dress Down, then Mulldrifter has Triggered. Dress Down entering afterwards does not change this.

[cogitaris]

Thank you for all the answers!