Its real value is in some choice staples and your ability to build upon them
One thing not to underestimate about casualty is that only half of the effect will be stoppable by a regular counterspell, which gives the casualty spells in general some added reach in metagames heavy on counters
Advanced Search Sets Random Syntax Showing 1-3 of 3 cards: "type: Creature, subtype: Possum" Display: Card Small Sorted By: Card Name Ascending Showing 1-3 of 3 cards: "type: Creature, subtype: Possum" Brightfield Glider Rambling Possum Tender Wildguide Advanced Search English
Given the generally low mana-curve in Modern, cards exiled with the pirate monkey will usually be castable with the help of the Treasures and almost any card is worth playing as it simply generates card advantage
Theres a surprising amount of +1/+1 counter synergy between original Ixalan cards like Herald of Secret Streams, Morningtide s Sage of Fables and Simic-sworn merfolk like Vorel of the Hull Clade or Prime Speaker Zegana
Time Sieve is a good one here because it lets you play two extra turns
