Dreamshaper Shaman — ruling 1

Dreamshaper Shaman can be sacrificed to pay for the cost of its own triggered ability.

Dreamshaper Shaman — ruling 2

While resolving Dreamshaper Shaman's ability, you can't pay {2}{R} more than once or sacrifice multiple permanents.

Dreamshaper Shaman — ruling 3

You can't pay {2}{R} and not sacrifice a nonland permanent, or vice versa. The cost must be paid in full or not at all.

Dreamshaper Shaman — ruling 4

If there are no nonland cards remaining in your library, you just randomize your library and continue playing.

Dreamshaper Shaman : règles, fonctionnement et interactions (MTG)

Dreamshaper Shaman is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

At the beginning of your end step, you may pay and sacrifice a nonland permanent. If you do, reveal cards from the top of your library until you reveal a nonland permanent card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

How it works : Dreamshaper Shaman

Original English text — Wizards of the Coast / Scryfall

#1January 24, 2020· Wizards of the Coast
Dreamshaper Shaman can be sacrificed to pay for the cost of its own triggered ability.
No other card is named in this ruling.
#2January 24, 2020· Wizards of the Coast
While resolving Dreamshaper Shaman's ability, you can't pay more than once or sacrifice multiple permanents.
No other card is named in this ruling.
#3January 24, 2020· Wizards of the Coast
You can't pay and not sacrifice a nonland permanent, or vice versa. The cost must be paid in full or not at all.
No other card is named in this ruling.
#4January 24, 2020· Wizards of the Coast
If there are no nonland cards remaining in your library, you just randomize your library and continue playing.
No other card is named in this ruling.