Glowing One

Deathtouch, Radioactivity.
The Glowing One gains +0/+2 for every
radioactive land under your control.
When the Glowing One deals damage to a player,
put a Radiation counter to that player.
When the Glowing One dies, until your next
upkeep, every land gains the radioactive subtype
and every nonland permanent has Radioactivity.