Hell, even looking at Teysa, Id clarify her as way more of a lifedrain deck a burn deck than anything else, as her typical play pattern is to double life manipulation triggers
[48] [49] [18] Green is the color of life, nature, evolution, and indulgence, drawing mana from forests
In order to reflect this shift in Magic, Decorated Knight was the holiday card
That said, in Rakdos you lack protection for this line and are required to rely on speed, with few backups that actually have teeth
See also the rules for timestamp order and dependency (rules 613.6 and 613.7)
The same is true of cards like Restore Balance that can be timed better with this