Cheapest priced copy (Planar Chaos): $0.49 at Card Kingdom, near mint, their price list as of .
Null Profusion 
Enchantment · Rare · Planar Chaos · #89
Skip your draw step.
Whenever you play a card, draw a card.
Your maximum hand size is two.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planar Chaos | 89 | Rare | $0.49 | $6.99 |
4 rulings from Wizards of the Coast
- 1 February 2007The triggered ability will trigger when you play a land card or cast a nonland card as a spell. It won't trigger when you play a copy of a card, such as with Isochron Scepter.
- 1 February 2007Your maximum hand size is checked only during the cleanup step of your turn. At any other time, you may have any number of cards in hand.
- 1 February 2007Countering a spell that has been cast will not prevent you from drawing the card.
- 1 October 2009If multiple effects modify your hand size, apply them in timestamp order. For example, if you put Spellbook (an artifact that says you have no maximum hand size) onto the battlefield and then put Null Profusion onto the battlefield, your maximum hand size will be two. However, if those permanents entered in the opposite order, you would have no maximum hand size.