If you use Evil Presence to prevent Unstable Mutation, then you can't prevent
Quicksand. Does 1 Vampire race the poison creature?
I think you're too slow OTD
G - Quicksand
A - Vampire # 1
G - Island. Agent
A - Evil Presence the Island (or lose to Unstable Mutation) and attack. [A=19, G=18]
G - Hold up Quicksand. Attack [1 poison]
A - Vampire #2. Attack and die to Quicksand. [A=18, G=18]
Then it goes...
2 poison
16
3 poison
14
4 poison
12
5 poison
10
6 poison
8
7 poison
6
8 poison
4
9 poison
2
10 poison
Win for Gobbo
OTP you would win this race.
But I wonder if he has a viable line using Unstable Mutation as removal, since you play a creature first.
A - Vampire #1
G - Quicksand.
A - If you ever attack, he can Quicksand you and then save Island+Unstable Mutation to kill the 2nd one and draw.
If you Evil Presence the Quicksand, Agent+Mutation should race you.
Draw?
I also underestimated the power of Unstable Mutation as removal!