When Myr Battlesphere enters, create four 1/1 colorless Myr artifact creature tokens.Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.
Flying: This creature gets +1/+0 until end of turn.: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.
Trample, hasteInfect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)At the beginning of the end step, sacrifice Putrefax.
: Put a charge counter on Ratchet Bomb., Sacrifice Ratchet Bomb: Destroy each nonland permanent with mana value equal to the number of charge counters on Ratchet Bomb.
At the beginning of your upkeep, you may put a charge counter on Golden Urn., Sacrifice Golden Urn: You gain life equal to the number of charge counters on Golden Urn.
Whenever another artifact you control enters, you may have Glint Hawk Idol become a 2/2 Bird artifact creature with flying until end of turn.: Glint Hawk Idol becomes a 2/2 Bird artifact creature with flying until end of turn.
, Sacrifice Flight Spellbomb: Target creature gains flying until end of turn.When Flight Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.
Imprint — When Prototype Portal enters, you may exile an artifact card from your hand., : Create a token that's a copy of the exiled card. X is the mana value of that card.
At the beginning of your upkeep, sacrifice Molten-Tail Masticore unless you discard a card., Exile a creature card from your graveyard: Molten-Tail Masticore deals 4 damage to any target.: Regenerate Molten-Tail Masticore.
When Contagion Clasp enters, put a -1/-1 counter on target creature., : Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Choose a nonland card name. Search target player's graveyard, hand, and library for any number of cards with that name and exile them. Then that player shuffles.
Trigon of Infestation enters with three charge counters on it., : Put a charge counter on Trigon of Infestation., , Remove a charge counter from Trigon of Infestation: Create a 1/1 green Phyrexian Insect creature token with infect.
When Trinket Mage enters, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.