Whenever Gonti's Aether Heart or another artifact you control enters, you get (two energy counters).Pay eight , Exile Gonti's Aether Heart: Take an extra turn after this one.
Destroy target creature if it has mana value 2 or less.Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent you controlled left the battlefield this turn.
, Sacrifice Implement of Ferocity: Put a +1/+1 counter on target creature. Activate only as a sorcery.When Implement of Ferocity is put into a graveyard from the battlefield, draw a card.
Return up to three target artifacts and/or creatures to their owners' hands.You may cast a spell with mana value 4 or less from your hand without paying its mana cost.
TrampleWhenever Untethered Express attacks, put a +1/+1 counter on it.Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)
: Another target Vehicle you control becomes an artifact creature until end of turn.Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)
MenaceWhenever Glint-Sleeve Siphoner enters or attacks, you get (an energy counter).At the beginning of your upkeep, you may pay . If you do, you draw a card and you lose 1 life.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)FlyingAt the beginning of your end step, each opponent discards a card., Sacrifice an artifact: Target creature gets -2/-2 until end of turn.