Les decks combo de old school.

Drop Eureka with big mean creatures in hand and attack (even better with Concordant Crossroads).

Here is a sample, played by Ben Perry at Kumite 2 (19/04/2019) :

Play Lich, then use Mirror Universe to switch lives and kill your opponent.

• Lich + Verduran Enchantress
• Le 2e deck (il n'a fait que 3-3-0 le lendemain de Noobcon 2018)

Use Mirror Universe to switch live, then finish your opponent off with a Fireball.

Mirrors in Arvika, un post de Svante Landgraf, avec un report (24 février 2018, Arvika)

Basalt Monolith + Power Artifact gets you “infinite” colourless mana for a huge Fireball.

• Jason Jaco's 5C version, 15/06/2017
• Building power monolith par Svante Landgraf, 13/02/2018
• ma version avec Land Tax, 05/08/18
• Adventure Island
  • v1.6, 23/04/2018
  • Oslo Ascenscion 2: top 4, 03/06/2018
  • v2.7, 03/08/2018
  • sideboard, 12/09/2019
  • Fishliver Oil Cup 3, 28/09/2019

Untap your opponent's lands with Candelabra of Tawnos.

Only if mana burn is applicable

• powersurge

Time Vault + Twiddle gives you an extra turn. Kill with a big Fireball.

• Felipe's (11/2015)
• Danny Friedman's deck : watch him win the finals of the Christmas Lockdown tournament (12/2020)

1 Regrowth
3 Sylvan Library

1 Wheel of Fortune

1 Demonic Tutor

1 Ancestral Recall
1 Braingeyser
1 Copy Artifact
2 Counterspell
1 Hurkyl's Recall
1 Mana Drain
1 Mana Short
4 Recall
1 Timetwister
1 Time Walk
1 Transmute Artifact
4 Twiddle

1 Black Lotus
1 Chaos Orb
2 Fellwar Stone
4 Howling Mine
1 Mana Vault
1 Mox Emerald
1 Mox Jet
1 Mox Pearl
1 Mox Ruby
1 Mox Sapphire
1 Sol Ring
3 Time Vault

3 City of Brass
3 Island
1 Library of Alexandria
1 Strip Mine
4 Tropical Island
2 Underground Sea
3 Volcanic Island

Sideboard:
1 Balance
3 Blue Elemental Blast
1 Boomerang
1 Fireball
2 Hurkyl's Recall
1 Mana Short
1 Mind Twist
3 Red Elemental Blast
2 Tranquility

• Danny Friedman @ N00bcom2 (02/04/2021)
  • Copy Artifact → Transmute Artifact
  • Strip Mine → Fireball
  • Sideboard

1 Balance
2 Blue Elemental Blast
1 Boomerang
2 Hurkyl's Recall
1 Mana Short
1 Mind Twist
1 Mirror Universe
2 Red Elemental Blast
1 Shivan Dragon
1 Tormod's Crypt
2 Tranquility

Guardian Beast + Chaos Orb = destroy a permanent each turn.

• The Beast by Gordon, 17/01/2017
• Beast Island primer by Radouf, 21/11/2021