Winterflame [Khans of Tarkir] Forest Plains Ulvenwald Hydra's power and toughness

Ulvenwald Hydra's power and toughness are each equal to the number of lands you control

Set: Hour of Devastation Type: Artifact Rarity: Uncommon Cost: {2} {1}

Myr Prototype can't attack or block unless you pay {1} for each +1/+1 counter on it

Set: Kaladesh Type: Instant Rarity: Common Cost: {R} Target attacking creature gets +3/+3 until end of turn

Cursed Type: Creature — Human Wizard Rarity: Rare Cost: {2}{U} Whenever another Human enters the battlefield under your control

Winterflame [Khans of Tarkir] Forest Plains Ulvenwald Hydra's power and toughnessSet: Khans of Tarkir Type: Instant Rarity: Uncommon Cost: {1}{U}{R} Choose one or both Tap target creature. Winterflame deals 2 damage to target creature. "The mountains scream with the dragons' throats." Chianul, Who Whispers Twice