Glitch—Discard a card. (Remove one [restriction] for each time you pay the glitch cost.) Add {R} for each [Mountain] land you control, then exile the top three cards of your library. You may play [one of] those cards this turn.
(Add a quest counter as this enters. Sacrifice after 6.) Whenever a land you control enters, add a quest counter. Reveal the top card of your library. If it's a land card, put it into your hand. Otherwise, you may put it into your graveyard. Until end of turn, creatures you control get +5/+5 and gain vigilance, trample, and haste.
Flash Flying When Mending Valkyrie enters, choose target permanent you own or permanent card with mana value 3 or less in your graveyard. You may return it to your hand.
Glitch {2}(Remove one [restriction] for each time you pay the glitch cost.) Create a 3/2 red creature token named Error with trample and haste. [Exile it at the beginning of the next end step.]
Though bound by the Maker's Egg, the SOURCE is felt in every new tear in reality.
Haste Whenever Mukal Charger attacks during your first combat phase each turn, untap all Constructs you control. After this phase, there's an additional main phase followed by an additional combat phase. Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
Trample, haste Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.) At the beginning of your end step, sacrifice a creature.
As an additional cost to cast this spell, pay {3} or discard a card. Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
When Mukal Reaper enters, you draw a card and you lose 2 life. Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
Whenever Mukal Sire or another Construct you control enters, Mukal Sire deals 1 damage to each opponent. Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
When Mukal Swarmhorde enters, put a +1/+1 counter on each other Construct you control. Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.) Whenever Mukal Warleader attacks, the next Construct spell you cast this turn costs {1} less to cast.