Crawling Sensation — ruling 1

If multiple land cards are put into your graveyard at once, Crawling Sensation's last ability triggers only once. This could happen because an effect (such as that of Crawling Sensation's first ability) put them there from your library at once, or because they were destroyed at the same time (such as two land creatures that were dealt lethal combat damage).

Crawling Sensation : règles, fonctionnement et interactions (MTG)

Crawling Sensation 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 upkeep, you may mill two cards. (You may put the top two cards of your library into your graveyard.) Whenever one or more land cards are put into your graveyard from anywhere for the first time each turn, create a 1/1 green Insect creature token.

How it works : Crawling Sensation

Original English text — Wizards of the Coast / Scryfall

#1April 8, 2016· Wizards of the Coast
If multiple land cards are put into your graveyard at once, Crawling Sensation's last ability triggers only once. This could happen because an effect (such as that of Crawling Sensation's first ability) put them there from your library at once, or because they were destroyed at the same time (such as two land creatures that were dealt lethal combat damage).
No other card is named in this ruling.