Hollow Marauder — ruling 1

Hollow Marauder’s first ability doesn’t change its mana value, which is always 7.

Hollow Marauder — ruling 2

When Hollow Marauder’s triggered ability resolves, the next target opponent in turn order (or, if it’s a target opponent’s turn, that opponent) chooses a card in hand without revealing it, then each other target opponent in turn order (if any) does the same. All chosen cards are then discarded at the same time.

Hollow Marauder : règles, fonctionnement et interactions (MTG)

Hollow Marauder 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

This spell costs less to cast for each creature card in your graveyard. Flying When this creature enters, any number of target opponents each discard a card. For each of those opponents who didn't discard a card with mana value 4 or greater, draw a card.

How it works : Hollow Marauder

Original English text — Wizards of the Coast / Scryfall

#1April 12, 2024· Wizards of the Coast
Hollow Marauder’s first ability doesn’t change its mana value, which is always 7.
No other card is named in this ruling.
#2April 12, 2024· Wizards of the Coast
When Hollow Marauder’s triggered ability resolves, the next target opponent in turn order (or, if it’s a target opponent’s turn, that opponent) chooses a card in hand without revealing it, then each other target opponent in turn order (if any) does the same. All chosen cards are then discarded at the same time.
No other card is named in this ruling.