Maze of Ith (PRM)

Land

: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Zoltan Boros & Gabor Szikszai
36170/2274
uuid: 536d15b0-7f59-57e2-a4ae-0747d610bb7d

2020-08-07:
Maze of Ith really is a land with no mana ability. It doesn't tap for colorless mana.
2020-08-07:
Maze of Ith can target an untapped attacking creature. It will still prevent the combat damage it would deal and be dealt.
2020-08-07:
The creature isn't removed from combat; it just has its damage prevented. It's still an attacking creature until the combat phase is complete.
2020-08-07:
You can activate Maze of Ith's ability targeting an attacking creature you control during the combat damage step or the end of combat step. It'll be untapped and the damage it had already dealt won't be undone.