Chief Engineer (Game Day) [Magic 2015 Promos] Griffin Whenever you tap a Swamp

Whenever you tap a Swamp for mana

where X is the number of basic land types among lands you control

Set: Future Sight Type: Artifact Rarity: Rare Cost: {3} As Cloud Key enters the battlefield

and charismatic

Set: Alpha Edition Type: Sorcery Rarity: Rare Cost: {X}{U}{U} Target player draws X cards

Chief Engineer (Game Day) [Magic 2015 Promos] Griffin Whenever you tap a SwampSet: Magic 2015 Promos Type: Creature Vedalken Artificer Rarity: Rare Cost: {1}{U} Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.) An eye for detail, a mind for numbers, a soul of clockwork.