Creatures with echo usually have powerful ETB triggers that can block, and you also have the option to keep them as an attacker on your following turn
Tournament Rule The tournament will be held in accordance with the Official Rules on the official website
(2021-04-16) If the back face of a modal double-faced card is countered, you will not be able to exile any cards, including the one that you countered, because those cards have only their front-face characteristics (including name) in the graveyard, hand, and library
Activated Sleeper Adaptive Sporesinger Akki Scrapchomper Alabaster Host Intercessor Alabaster Host Sanctifier Ambulatory Edifice Annex Sentry Apostle of Invasion Archfiend of the Dross Argentum Masticore Armored Scrapgorger Aron, Benalia's Ruin Ascendant Evincar Atmosphere Surgeon Atraxa's Skitterfang Atraxa, Grand Unifier Atraxa, Grand Unifier Atraxa, Praetors' Voice Attentive Skywarden Axiom Engraver Ayara, Furnace Queen Balduvian Atrocity Basilica Shepherd Battlefly Swarm Belbe, Corrupted Observer Benalish Sleeper Bilious Skulldweller Blackcleave Goblin Blade Splicer Bladed Ambassador Bladegraft Aspirant Blight Mamba Blight Pile Blight Titan Blightbelly Rat Blighted Agent Blightsower Thallid Blightsteel Colossus Blightwidow Blind Zealot Blinding Souleater Blistergrub Bloated Contaminator Bloated Processor Body Snatcher Bone Shredder Bonepicker Skirge Branchblight Stalker Brimaz, Blight of Oreskos Brudiclad, Telchor Engineer Brutalizer Exarch Burnished Dunestomper Cacophony Scamp Cankerbloom Capricious Hellraiser Carnifex Demon Cathedral Membrane Caustic Hound Cephalopod Sentry Chained Throatseeker Chancellor of the Annex Chancellor of the Dross Chancellor of the Forge Chancellor of the Spires Chancellor of the Tangle Charforger Chimney Rabble Chittering Skitterling Chrome Host Hulk Chrome Host Seedshark Chrome Prowler Cinderslash Ravager
While it is random how many turns you end up with, it is not unknown
