Thantis, the Warweaver
Legendary Creature — Spider
Vigilance, reach
All creatures attack each combat if able.
Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Thantis.
She spins a web few can resist. Its sweet aroma sparks chaos in every heart.
Jehan Choo
The List (PLST)
• #C18-46Rulings
If a creature can't attack for any reason (such as being tapped or having come under that player's control that turn), then it doesn't attack. If there's a cost associated with having it attack, the player isn't forced to pay that cost, so it doesn't have to attack in that case either.
(wotc • 2018-07-13)
Each creature's controller still chooses which player or planeswalker the creature attacks.
(wotc • 2018-07-13)
You can't attack yourself or your own planeswalkers to give Thantis +1/+1 counters, but Thantis appreciates the way you think.
(wotc • 2018-07-13)
Rulings
If a creature can't attack for any reason (such as being tapped or having come under that player's control that turn), then it doesn't attack. If there's a cost associated with having it attack, the player isn't forced to pay that cost, so it doesn't have to attack in that case either.
(wotc • 2018-07-13)
Each creature's controller still chooses which player or planeswalker the creature attacks.
(wotc • 2018-07-13)
You can't attack yourself or your own planeswalkers to give Thantis +1/+1 counters, but Thantis appreciates the way you think.
(wotc • 2018-07-13)