Underdark Beholder

{4}{B}{B}

Creature — Beholder

CMB1Mystery Booster Playtest Cards 2019#49rare
Border
black
Frame
2015
Pull rate
~1 in 121
Illustrator
Chris Tulach
Found in
Mystery Booster Booster Pack (Convention Edition)
Printings2
CommanderNot legalModernNot legalStandardNot legal
Format legality
AlchemyNot legal
BrawlNot legal
CommanderNot legal
Competitive BrawlNot legal
DuelNot legal
Future StandardNot legal
GladiatorNot legal
HistoricNot legal
LegacyNot legal
ModernNot legal
OathbreakerNot legal
Old SchoolNot legal
PauperNot legal
Pauper CommanderNot legal
PennyNot legal
PioneerNot legal
PreDHNot legal
PremodernNot legal
StandardNot legal
Standard BrawlNot legal
TimelessNot legal
Tiny LeadersNot legal
VintageNot legal
Underdark Beholder enters the battlefield with ten eyestalk counters on it. If Underdark Beholder would be dealt damage, remove that many eyestalk counters from it instead. If you can't, sacrifice it. Whenever Underdark Beholder attacks, reveal cards from the top of your library until you reveal an instant, sorcery, or enchantment card with converted mana cost less than the number of eyestalk counters on Underdark Beholder. You may cast it without paying its mana cost. Shuffle your library.
6/6

Plays as: Attack Trigger

Market · per finishspark updated 11h ago · prices as of 2026-07-12
Nonfoil+0.0%
$1.47
$0.35 low$0.34 gap
Cheapest playable copy$0.37· across 2 printings

Rulings

5 · latest Nov 12, 2019 · one tap opens all
  • WotCNov 12, 2019

    If Underdark Beholder leaves the battlefield while its last ability is on the stack, use the number of eyestalk counters it had before it left to determine what converted mana cost to look for.

  • WotCNov 12, 2019

    If a spell has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.

  • WotCNov 12, 2019

    If you cast a card “without paying its mana cost,” you can’t choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, such as that of Tormenting Voice, you must pay those to cast the card.

  • WotCNov 12, 2019

    Underdark Beholder’s second ability isn’t a damage prevention effect. It can replace damage that can’t be prevented.

  • WotCNov 12, 2019

    You must cast the revealed card while Underdark Beholder’s triggered ability is resolving. You can’t cast it later in the turn.