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Sentinel SliverHow it works & interactions with other cards

By the ManaCount desk· 2 min read· Commander Masters· August 4, 2023
Carte Magic Sentinel Sliver

Sentinel Sliver 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.

01

Official card text

Sliver creatures you control have vigilance. (Attacking doesn't cause them to tap.)

Complete guide

Sentinel Sliver is a classic tribal piece that offers your Sliver army a significant defensive advantage by granting them vigilance. This means your creatures can apply pressure on the battlefield without leaving your defenses open to a counterattack. It is a cost-effective creature that ensures your board presence remains threatening during every phase of the turn.

What It Does

Sentinel Sliver is a lord-style creature that provides a static ability to itself and all other Sliver creatures you control. The ability 'vigilance' specifically allows these creatures to attack without being tapped. This is a powerful keyword for tribal decks that want to maintain blockers for the opponent's turn while still dealing damage.

How It Resolves Step by Step

First, the static ability is active as long as Sentinel Sliver is on the battlefield. When you move to the declare attackers step, you choose which Sliver creatures you control will attack. Because of vigilance, you simply declare them as attackers without physically tapping the cards. They remain untapped throughout the combat phase and into your opponent's next turn.

Common Mistakes and Type Changes

It is important to remember that this effect only applies to creatures with the 'Sliver' subtype. If an effect changes Sentinel Sliver's type so that it is no longer a Sliver, it loses the benefit of its own ability, though it will still grant vigilance to your other Slivers. Additionally, multiple instances of vigilance on the same creature do not provide any extra benefit beyond the first.

When to Play It

This card is best played early in the game to establish a board that can both attack and defend. In a deck focused on Slivers, it turns every subsequent creature you play into a dual-purpose threat. It is especially useful against aggressive decks that rely on you tapping out to find an opening for their own attacks.

Interaction examples

Standing Guard with Artifacts

If you have Sentinel Sliver on the battlefield and somehow make Ornithopter of Paradise a Sliver (for example, with a type-changing effect), the Ornithopter gains vigilance. You can attack with it in the air, and because it is untapped, you can still use its ability to add mana during your post-combat main phase or on your opponent's turn.

Managing the Stack

If you control both creatures, Sentinel Sliver grants itself vigilance, allowing it to attack and stay upright. While Esper Sentinel is not a Sliver and does not gain vigilance, its tax ability remains active regardless. If your opponent tries to cast a spell to remove your Sentinel Sliver, Esper Sentinel's triggered ability will still force them to pay mana or let you draw a card.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Sentinel Sliver

Original English text — Wizards of the Coast / Scryfall

  1. #1· Wizards of the Coast

    If you change the creature type of a Sliver you control so it’s no longer a Sliver, it will no longer be affected by its own ability. Its ability will continue to affect other Sliver creatures you control.

    No other card is named in this ruling.

  2. #2· Wizards of the Coast

    Abilities that Slivers grant, as well as power/toughness boosts, are cumulative. However, for some abilities, like flying, having more than one instance of the ability doesn’t provide any additional benefit.

    No other card is named in this ruling.

02

Legal formats

historictimelessgladiatorpioneermodernlegacypaupervintagecommanderoathbreakerbrawlcompetitivebrawlpaupercommanderdueltlr
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