Ghalta and Mavren (Showcase Planar Booster Fun) [March of the Machine] Ixalan Promos you may put a -1/-1

you may put a -1/-1 counter on target creature

Set: Double Masters Type: Artifact Rarity: Rare Cost: {2} Whenever a permanent becomes untapped

An alien from another world

you may play a 'non-attack' action cards with bue color strips from your arsenal as though they were an instant

Set: Dynasty Finish: Cold Foil Type: Action Subtype: Item Rarity: Common Class: Mechanologist Cost: 1 Hyper Driver enters the arena with 1 steam counter on it

Ghalta and Mavren (Showcase Planar Booster Fun) [March of the Machine] Ixalan Promos you may put a -1/-1Set: March of the Machine Type: Legendary Creature Dinosaur Vampire Rarity: Rare Cost: {3}{G}{G}{W}{W} Trample Whenever you attack, choose one Create a tapped and attacking X X green Dinosaur creature token with trample, where X is the greatest power among other attacking creatures. Create X 1 1 white Vampire creature tokens with lifelink, where X is the number of other attacking creatures.