If exile wasn't needed, she can buff up a blocker with +1/+1 and first strike, or, if you're really desperate, make a Samurai token too
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Creature - Wizard Eldrazi Creature (CTRL to add secondary) Enchantment Echoes of Eternity If a triggered ability of a colorless spell you control or another colorless permanent you control triggers, that ability triggers an additional time
You see it played all of the time in Commander or casual gaming
-The creature deals the damage, not the spell
Deny the Witch is a catch-all counterspell that can stop almost anything at a restrictive casting cost