+guan (7)
Whenever you cast a spell, note the first letter of its artist's name. If that letter wasn't already noted, put a +1/+1 counter on Abstract Iguanart.
When this creature enters the battlefield, you may discard a card. If you do, draw a card.
Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
When Guan Yu, Sainted Warrior is put into your graveyard from the battlefield, you may shuffle Guan Yu into your library.
Destroy all tapped creatures.
Whenever another creature dies, you may have Hissing Iguanar deal 1 damage to target player or planeswalker.
If CARDNAME is in your opening hand and you're not the starting player, you may reveal it. If you do, you become the starting player.
Haste
Toxic Iguanar has deathtouch as long as you control a green permanent. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)
Gatherer works better in the Companion app!