Make Your Mark

Convoke (Each creature you tap while playing this spell reduces its cost by {1} or by one mana
of that creature's color)
1-3= Target creature gets +1/0 & Double Strike until end of turn & you create a 1/1 warrior.
4-8= Same as above except it's a 2/2 warrior.
9-14= Same as above except it's a 3/3 warrior.
15-20= Same as above except it's a 4/4 warrior.