Commander 2021 — Rare
Sorcery
Gaze of Granite rulings:
2013-04-15: If a permanent has in its mana cost, the value of that X is 0.
2013-04-15: The mana value of a creature token is 0 unless that token is a copy of another creature, in which case it copies that creature’s mana cost.
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Legendary Artifact
Karn's Sylex enters tapped.
Players can't pay life to cast spells or to activate abilities that aren't mana abilities.
, , Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.
Artifact Creature — Dragon (5/5)
Flying
: Steel Hellkite gets +1/+0 until end of turn.
: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by Steel Hellkite this turn. Activate only once each turn.
Sorcery
Return all nonland permanents with mana value X or less to their owners' hands.
Creature — Plant Hydra (0/0)
When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library.
Genesis Hydra enters with X +1/+1 counters on it.
Creature — Dragon (3/4)
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.)
Flying
Whenever this creature attacks, return target nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is this creature's power.
Land
: Add .
, : You get (an energy counter).
, , Pay X , Sacrifice HELIOS One: Destroy target nonland permanent with mana value X. Activate only as a sorcery.
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