Doran, the Siege Tower [Champs and States] Clue you may search your library

you may search your library for a Forest card

Allosaurus Rider's power and toughness are each equal to 1 plus the number of lands you control

Set: Kaladesh Inventions Type: Artifact Creature — Construct Rarity: Mythic Cost: {4}{B}{B} Menace

Sacrifice From Beyond: Search your library for an Eldrazi card

Set: Arabian Nights Type: Artifact Creature — Spirit Rarity: Rare Cost: {4} Flying (This creature can't be blocked except by creatures with flying or reach

Doran, the Siege Tower [Champs and States] Clue you may search your librarySet: Champs and States Type: Legendary Creature Treefolk Shaman Rarity: Rare Cost: {W}{B}{G} Each creature assigns combat damage equal to its toughness rather than its power.