Viserion, He Who Sleeps

Flying, Haste, First Strike.
When Viserion, The Master of Water enters the battlefield, it gets +X +X , where X is the amount of Islands on the battlefield.
{t}, {x} Tap Viserion, The Master of Water. Target player draws X cards, where X is the total cost of this ability.
The waters of Veseria were calm throughout the ages, or so they thought.
- Velrune.