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This works well with spellslinger strategies, especially with tools like Hypersonic Dragon and Vedalken Orrery that let you cast sorceries on opponents' turns

Planes usually have two important parts: A main ability which can be a continuous effect, such as Tazeem in Zendikar (whose ability is that creatures can't block while this plane is active), or a triggered ability, such as Undercity Reaches from Ravnica (which allows the controller to draw a card each time one of their creatures deals combat damage to a player)

Unlike other mechanics from Bloomburrow (mostly offspring), expend is flavor-neutral, so any card from any setting could have abilities triggered by expend

There is plenty of card draw available with Thirst for Knowledge, and Blue Tron gains access to other win conditions and exploits them well