As anyone who has played Magic for any length of time will tell you, casting spells for free is, more often than not, quite good
If so, be on the lookout for spikes in Dogmatika and Tri-Brigade QCSRs
Additionally, being treasures, they can be banked for later turns, and can be cracked for any color of mana
As a point of caution, if you don't do your best in solitaire and drop him a link by attribute to GY, you may run out of removal materials, so be careful about that
While combat tricks are less plentiful in Modern, a reprint for Reconnaissance is appreciated with how high the price tag was for the card
The math: if a card is $100 in PSA 9 and $150 in PSA 10, and there are 5,000 PSA 10s, you're not buying scarcity