It used to be that Mega Evolving ended your turn, but these days, all you need to do is consult the rule box on the card itself , not unlike ex, EX, and GX cards
Strike the finishing blow with consecutive attacks
(Scryfall note) If a turn has multiple combat phases, the ability can only be activated before the beginning of the declare attackers step of the first combat phase in that turn
Saskia the Unyielding bypasses this thanks to its ability to choose a player when it enters the battlefield and deal damage to them whenever your creatures hit another player
Dusknoir [Reverse Holo] #62 (Pokemon Brilliant Stars | Pokemon Cards) prices are based on the historic sales
Pokemon 1Budew ASC 16 1Crobat V DAA 104 1Dedenne-GX UNB 57 2Garbodor BKP 57 1Girafarig LOT 94 1Klefki SVI 96 2Mega Absol ex MEG 86 1Squawkabilly ex PAL 169 1Tapu Koko TEU 51 1Tapu Lele-GX GRI 60 2Trubbish NVI 48 Trainer 1Adventure Bag LOT 167 2Battle Compressor Team Flare Gear PHF 92 1Battle VIP Pass FST 225 1Carmine PRE 103 4Dark Patch ASR 139 1Escape Rope BST 125 1Field Blower GRI 125 1Fighting Fury Belt BKP 99 2Float Stone BKT 137 1Forest Seal Stone SIT 156 2Guzma BUS 115 1Hisuian Heavy Ball ASR 146 1Lillie's Determination ASC 192 1Marnie CPA 56 1Muscle Band XY 121 1Night Stretcher ASC 196 4Quick Ball SSH 179 1Roxanne ASR 150 1Secret Box TWM 163 2Sky Field ROS 89 2Temple of Sinnoh ASR 155 3Ultra Ball ASC 213 3VS Seeker PHF 109 Energy 7Basic Energy Charizard ex You asked for it, you have it
