Skithiryx, the Blight Dragon | Warstorm Surge | Coat of Arms

(and one other card)

Skithiryx and
Rite of Replication in hand.
Warstorm Surge and
Coat of Arms on the battlefield.
You have three or less opponents.
There are at least two other Dragons and/or Skeletons on the battlefield.
({10} magic symbol) ({U} magic symbol) ({U} magic symbol) ({B} magic symbol) ({B} magic symbol) available.

Cast
Skithiryx by paying ({3} magic symbol) ({B} magic symbol) ({B} magic symbol) .
Skithiryx enters the battlefield, triggering
Warstorm Surge, giving an opponent at least seven poison counters.
Cast
Rite of Replication with kicker by paying ({7} magic symbol) ({U} magic symbol) ({U} magic symbol) , creating five token copies of
Skithiryx.
Put all five
Skithiryx tokens into your graveyard due to the legend rule.
Warstorm Surge triggers for each
Skithiryx token.
Resolve the first
Skithiryx trigger, giving an opponent at least seven poison counters.
If the opponent has ten or more poison counters, they lose the game as a state-based action.
Repeat from step 6 for each remaining trigger.