1. Go to Mage Repository
2. Run command exemplified below:

For cards added since tagOrSha1 till head revision (you can replace HEAD with another tagOrSha1):
git log tagOrSha1..HEAD --diff-filter=A --name-status | sed -ne 's/^A[^u]Mage.Sets\/src\/mage\/sets\///p' | sort -u > added_cards.txt

for Windows: you need to replace ' by "" and remove -u in sort

Example for cards implemented since hash:

since 1.4.2.v5
git log 8dca887fadbbea41fb649ff17c5fe547a82ef23a..HEAD --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.3.v0
git log 5de4637d9c7967612c207d3cf915c2861d922029..HEAD --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.3.v2
git log 6d8378d5e49629a2fa126baf84340156a28f25db..HEAD --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.3.v3
git log 23039572f2206ade860f5835e9b85e82a9c4b2a1..HEAD --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt


since 1.4.4.v0
git log 0a458707ddaaa5e7e82ab06d17633084f67077c1..HEAD --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.4.v3
git log 3d8494edb5c0fddcb972758f7d983b8b66a9651e..head --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.4.v4
git log 513a574ae98aff3d7820e5411a8e5f2a6506e69c..head --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

since 1.4.4.v6
git log 7650f53dee0b4d480d2a63befed72b6c8197e752..head --diff-filter=A --name-status | sed -ne "s/^A[^u]Mage.Sets\/src\/mage\/sets\///p" | sort > added_cards.txt

3. Copy added_cards.txt to trunk\Utils folder
4. Run script:
> perl extract_in_wiki_format.perl
5. Open added_cards_in_wiki_format.txt
6. Copy content to release notes