First Lord, Lion El' Jonson

Convoke (Each creature you tap while paying this spell
reduces its cost by {1} or by one mana of that creature's
color.)
Vigilance, trample
Whenever Lion El'Jonson enters or attacks,
choose one —
• Lion El'Jonson fights another target creature.
• Other creatures you control get +2/+2 until end of turn.
• Exile the top card of each players library, until end of
turn you may cast any number of nonland cards exiled
this way, and you may spend mana as though it were
man