Shoduu the Ancient Whisper

Haste
Nonbasic landwalk
Shoduu the Whisper has hexproof as long as it is not attacking.
Whenever an opponent targets Shoduu the Whisper with a spell or ability you draw a card and they discard a card.
When Shoduu the Whisper attacks, defending player reveals the top card of their library. Shoduu gains +X/+0 until end of turn where X is that card's converted mana cost.