Here is the list of budge creatures with green card draw abilities attached to them: Elvish Visionary When Elvish Visionary enters the battlefield, draw a card Garruks Packleader Whenever another creature with power 3 or greater enters the battlefield under your control, you may draw a card Llanowar Visionary When Llanowar Visionary enters the battlefield, draw a card Tap: Add 1 green Soul of the Harvest Trample Whenever another nontoken creature enters the battlefield under your control, you may draw a card Wall of Blossoms Defender When Wall of Blossoms enters the battlefield, draw a card Bonus Green Card Draw: A Garruk Planeswalker
That includes the Collector Boosters, Gift Bundle, Booster Bundle, Scene Box, and Prerelease Pack
Boo comes with both trample and haste, abilities that seem wasted on a humble 1/1, but both versions of Minsc offer ways of buffing him up into a much more serious threat
But it gets even better with its [V] ability, Ultimate End, which gives all your other creatures +2/+2 until end of turn and puts an indestructible counter on each of them