Arcades, the Strategist
Oracle Text
Flying, vigilance.
Whenever a creature with defender enters the battlefield under your control, draw a card.
Each creature you control with defender assigns combat damage equal to its toughness rather than its power and can attack as if it doesn't have defender.
I like this Dragon.
1) It only costs 4 mana to cast (1WUG)
2) Its got evasion (flying) but its good for blocking (vigilance)
3) It has a good defensive body for its stats (3/5).
4) He gives you a +0 every time you play a defender because of the card draw.
5) He makes your defenders into sizable beaters that can strike back.
I did a lot of looking and the best defenders seam to be mostly in the 0-4 cmc range with a few exceptions of actual goodstuff like Colossus of Akros, Manor Gargoyle, Grozoth, Sprouting Phytohydra, and Dazzling Ramparts. A lot of the cheap-to-cast ones are exceedingly amazing for their stats when you think of their toughness=power.
The fact that each defender cantrips when you have Arcades out is simply fantastic. Especially with ones that already do it like Wall of Omens and Wall of Blossoms which suddenly become +1 value from just +0.
Guard Gomazoa and others are kinda nice with him, too.