The Fast and Teferius: Core Set 2021

[FTW]

Pros
1 - It outclasses Gurmag Angler
2 - most of the time it will outclass Tarmogoyf
3 - it has trample, so it outclasses True Name Nemesis
4 - it's a fucking 6/6 that can't be hit by Abrupt Decay, Fatal Push, or Lightning Bolt
5 - if it's Elk-ed it's still a 3/3 for R, which is still a Wild Nacatl.
6 - It also allows your Lava Spike and Chain Lightning to act as removal spells, while still dealing 3 damage.

Burn.dec doesn't want Gurmag Angler, Tarmogoyf, True-Name Nemesis or Wild Nacatl on turn 3 or later. It just wants more burn.

On turn 3 Burn doesn't need to durdle with a creature that can't turn sideways until turn 4. It just wants to deal the last few damage. On turn 4 (after casting this), Burn doesn't need to double burn onto creatures. It just wants to deal the last few damage. This is also a terrible topdeck.

Barook's math for turn 2 looks good, but now you're in A+B combo territory. You need to draw a specific combo of cards, without cantrips, and cast them in sequence. That's very high variance. Without those perfect hands, realistically this is a T3 card, which is a bit too slow. Regular Burn is less explosive but lower variance.

In comparison you could use that 1 mana to cast Light Up the Stage into 1-2 more burn spells.

This card looks a lot stronger in Dragon Stompy with Chandra. You can easily curve Chandra into 4-mana 6/6 trample, then Chandra gets to tick up while shocking creatures.