Do Planeswalkers have summoning sickness?

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Tags

1. #means
2. #first
3. #become
4. #unless
5. #unable
6. #sickness
7. #abilities
8. #summoning
9. #becomes
10. #symbol
11. #planeswalker
12. #since
13. #attack
14. #their
15. #start
16. #creature
17. #controlled