Sultai (Blue/Black/Green) The Mimeoplasm gives you access to green, black, and blue, and comes equipped with built-in graveyard removal, allowing you to exile two cards from opponents' graveyards to power it up
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
The Knight creature type has been around since 1995, so the amount of Knight support is very high
Don't spend them all on one spell
They are 4 drop pieces of equipment, equip for life, that give +1/+1 to the equipped dork for each Swamp you control