Time-Hoarder Dragon

Whenever you would spend {5} or more mana on a instant or sorcery, add a time counter to this card.
Whenever this card would be destroyed, remove a time counter instead.
As long as a time counter exists on Time-Hoarder Dragon, you cannot lose the game.

When you {t} this creature, your opponent rolls a d20.
10-19 You may spend opponents untapped mana to cast a spell.
20 Double the number of counters on this card.
"Chat, it looks like its Time for another fire sale!"
— Melissa Belladon