Scourge of Valkas [Secret Lair Drop Series] Friday Night Magic 2016 Set: Modern Horizons 2 Type:

Set: Modern Horizons 2 Type: Artifact Creature — Dragon Rarity: Mythic Cost: {12} Domain — This spell costs {2} less to cast for each basic land type among lands you control

Prairie Stream enters the battlefield tapped unless you control two or more basic lands

And it turns out

Can be built as a waterline model or full-hull model

Set: Secret Lair Drop Series Type: Legendary Creature — Elemental Rarity: Mythic Cost: {3}{R}{R}{G}{G} Landfall — Whenever a land enters the battlefield under your control

Scourge of Valkas [Secret Lair Drop Series] Friday Night Magic 2016 Set: Modern Horizons 2 Type:Set: Secret Lair Drop Series Type: Creature Dragon Rarity: Mythic Cost: {2}{R}{R}{R} Flying Whenever Scourge of Valkas or another Dragon enters the battlefield under your control, it deals X damage to any target, where X is the number of Dragons you control. {R}: Scourge of Valkas gets +1 +0 until end of turn.